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Which of the following types of hydraulic pumps would be used in a steering system?（）
A . Lobe
B . Screw
C . Radial piston
D . Volute
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Failure of the burner flame in an auxiliary boiler would probably be a result of（）
A . water in the fuel oil
B . broken high tension leads
C . incorrect electrode setting
D . full fuel pressure at the nozzle
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A burning AC motor would be considered what class of fire?（）
A . Class "A"
B . Class "B"
C . Class "C"
D . Class "D"
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The type of carrier required to file a copy of freight tariffs would be the（）.
A . common carrier
B . tramp
C . public vessel
D . bulk carrier
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A Master would be well advised to file a note of protest if（）.
A . Portions of his vessel's cargo were illegally impounded
B . Longshore labor went on strike in a port causing undue vessel delay
C . Cargo was received at ship side which was damaged in land transit
D . The vessel encountered heavy weather which might have caused bottom damage
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In which situation would the use of a static route be appropriate?（）
A . To configure a route to the first Layer 3 device on the network segment.
B . To configure a route from an ISP router into a corporate network.
C . To configure a route when the administrative distance of the current routing protocolis too low.
D . To reach a network is more than 15 hops away.
E . To provide access to the Internet for enterprise hosts.
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When out of sight of land, a ship’s position can be found by using（）.
A . the coastal navigation
B . the celestial navigation
C . traditional navigation
D . the great circle navigatio
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A fire in a pile of canvas would be classified as a （）.
A . class A
B . class B
C . class C
D . class D
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If ignited, which of the listed materials would be a class "B" fire?（）
A . Magnesium
B . Paper
C . Wood
D . Diesel Oil
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Which setting change would you allow to make a child object to be moved out of a parent object?（）
A . Flex mode on.
B . Flex mode off.
C . Confined mode on.
D . Confined mode off.
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Out of which port on Sw-Ac3 would a frame containing an IP packet with a destination address that is not on a local LAN be forwarded?（）https://assets.asklib.com/images/image2/2018073017053476385.png
A . Fa0/1
B . Fa0/3
C . Fa0/4
D . Fa0/8
E . Fa0/9
F . Fa0/12
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What type of therapy would most likely be used for a person trying to overcome a fear of heights?
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I would like to pay a visit to your factory to find out about the [assiblity of importing automobile parts from you.
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Return on investment would not be a consideration of a pricing objective based on profitability.
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A more Chinese way of commenting on clothes would be asking about .
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The most common method for pricing out non-burdened labor hours for a three year project would be to:
A . Price out the hours at the actual salary of the people to be assigned.
B . Price out the work using a company-wide average labor rate.
C . Price out the work using a functional group average labor rate.
D . All of the above.
E . A and B only.
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If all the viruses on the planet were to disappears global catastrophe would_____,and the natural ecosystems of the earth would collapse in a spectacular crash under burgeoning populations of insects.
A．varnish
B．disperse
C．contaminate
D．ensue
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Viewed from a star in some other comer of the galaxy, Earth would be a speck, a faint blue dot hidden in the blazing light of our sun. While our neighbors Venus and Mars would reflect a fairly even glow, Earth would put on a little show. Earth's light would brighten and dim as it spins, because oceans, deserts, forests and clouds—which are all too small to be seen from such a distance-reflect varying amounts of sunlight. The variations, it turns out, are so strong and distinctive that surprising amount of information could be taken from a simple ebb and flow of light. Scientists at Princeton University and the Institute for Advanced Study conducted a detailed study of Earth's reflections as a way for human scientists to learn about distant planets that may be like our own.
(2) "If you looked at our solar system from far away, and you looked at the terrestrial planets--Mercury, Venus, Earth and Mars--one of the quickest ways to see that Earth is unique is by looking at the light curve," said Ed Turner, professor of astrophysics and a co-author of the study. "Earth has by far the most complicated light curve." The standard thinking in the field had been that most of the information about an Earth-like planet would come from spectral analysis, a static reading of the relative component of different colors within the light, rather than a reading of changes over time. Spectral analysis would reveal the presence of gases such as water vapor, carbon dioxide and oxygen, in the planet's atmosphere, looking at the change in light over time docs not replace spectral analysis, but it could greatly increase the amount of information scientists could learn, said Turner. It may indicate, for example, the presence of weather, oceans, ice or even plant life.
"Earth would put on a little show" means: as it spins, ______.
A．Earth is a more active planet than Venus and Mars
B．Earth reflects a brighter light curve than Venus and Mars
C．Earth shows oceans, deserts, forests and clouds, while Venus and Mars don't
D．Earth reflects sunlight in an ebb-and-flow manner
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One day I can hear the faint rustle of autumn coming. The next day I can’t. One evening summer leaks away into the cool night sky, but the next morning it’s back again. But there is headway. Birdsong has gone, and is【46】______ (replace) by a whining bag-piping of insect creation. I look out across the pasture as dusk【47】______(begin) and see a shining galaxy of airborne bugs. What would it be like, I wonder, to have an【48】aware______of the actual number of insects on this farm？
I ask myself a version of this question every day: "Have you ever really looked at…？”You can【49】______in the blank yourself.
Every day I am blinded by【50】familiar______. I open our beehive, which is filled with honey, and the particularity of the honeybees, and even of their community, somehow escapes me, if only because I’ve been living with honeybees a good part of my life. I remember the phrase, "keep your eyes【51】______ (peel) , ”and maybe that’s what I need, a good peeling.
Again and【52】______, I find myself trying to really look at what I' m seeing. It happened the other afternoon, high on a nearby mountain. A dragonfly had settled on the denuded tip of a pine bough. It clung, still as only a dragonfly can be. Then it flicked upward and caught a midge and settled on the bough again, adjusting【53】______(precise) to the wind. I see dragonflies【54】______ (quiver) in the insect clouds above my pasture, too. I am always aware, however , that there’s no such thing as really looking.
What I want to see is invisible anyway: the prehistoric depth of time embodied in the form. of those dragonflies, the pressure of life itself, the web of【55】______(relate) that bind us all together. I find myself trying to【56】wit______the moment when the accident of life becomes a continued purpose. But this is a small farm, and, being human, 1 keep【57】______(come) up against the limits of what a human can see.
This morning I found a spider resting—or perhaps hunting—on the leaf of a hydrangea, the axis of the spider’s abdomen perfectly aligned with the axis of the leaf. What I noticed was the symmetry of their placement, the way spider, and leaf resembled【58】_____other. What I wanted to determine was the spider’s intent. If I【59】c______, I would have asked it, "What are you doing？” Or, better yet, "Who are you？” But all I could do was look—and realizing that I was looking—make the【60】b______of what I’d seen.
(16)
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Last year, America's Defence Advanced Research Projects Agency, DARPA, thought it would be a good idea to organize a robot race across the Nevada desert. The idea of the Grand Challenge, as DARPA dubbed it, was for autonomous robot vehicles to steer a 227 km(142 mile) course and claim a $1 m jackpot. This would be a first step towards DARPA's ultimate goal of being able to build unmanned self-driving military vehicles and thus keep American troops out of harm's way on the battlefield.
This year's crop of 23 entrants were offered an even greater incentive—a $2m prize for the winner. That, plus the intervening 18 months, seems to have done the trick. This time, five vehicles finished the 211 km course. The winner, a modified Volkswagen Touareg dubbed Stanley by its makers, a team from Stanford University, did it in a mere six hours and 54 minutes.
Stanley was, of course, specially hardened by its designers for the rough terrain of the Nevada desert. The clever bit, however, was the vehicle's brain. This was designed and built by the Stanford Artificial Intelligence Laboratory (SAIL).
Stanley's brain consists of six top-of-the-range Pentium chips wired collaboratively together. It is programmed with special software that is able to learn from its mistakes. This software mastered the tricks of collision-avoidance in a series of desert test runs conducted before the race started.
Like all brains, Stanley's has a range of sensory inputs to process. A global positioning system (GPS) receiver tells it where on the Earth's surface it is. Television cameras, radar and four laser based distance monitors tell it what its surroundings are like. By comparing its GPS location with its pre-programmed destination (announced only a few hours before the race began), it knew which way it wanted to go. And, by studying its surroundings, it could work out what looked like the safest route that was also in approximately the right direction.
Although Stanley carried off the laurels, the other four finishers did respectably. Sandstorm managed a time just ten minutes behind the winner while her sister vehicle Highlander came in ten minutes after that. GrayBot and TerraMax, the other two course-completers, came in at seven hours 30 minutes and 12 hours 51 minutes, respectively.
So smart, autonomous vehicles can, indeed, find their way across several hundred kilometres of desert. The question is, what next？ DARPA's answer, of course, will be to go down the military route. But this sort of technology has obvious civilian applications as well, as Sebastian Thrun, the head of both SAIL and the Stanford racing team, is keen to emphasize.
Dr. Thrun thinks that it could lead to self-driving road vehicles within 30 years and—more immediately—to greatly improved collision-avoidance systems. Whether the freeways of California will prove as easy to navigate as the gulches of Nevada, though, remains to be seen.
The purpose of holding a robot race is to
A．adventure through the Nevada desert.
B．delevop unpiloted vehicles for military use.
C．win a $lm jackpot.
D．keep American troops unharmed.
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Some insects ______ the color of their surroundings to protect themselves.tke inB．tke offC．tkeSome insects ______ the color of their surroundings to protect themselves.tke in B．tke off C．tke on D．tke out
A．take in
B．take off
C．take on
D．take out
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A speaker's linguistic competence would be made up of pragmatic competence. （)
是
否
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Which of the following events is not a transaction that would be recorded in a company
A．A.The purchase of equipment .
B．B.The investment of additional cash in the business by the owner.
C．C.The death of a key manager.
D．D.The sale of equipment .
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An example of a firm’s financing decision would be（）
A．acquiring a competitive firm
B．determining how much to pay for a specific asset
C．issuing 10-year versus 20-year bonds
D．deciding whether or not to increase the price of its products
