-
Which knot reduces the strength of a line by the LEAST amount（）.
A . Bowline
B . Clove hitch
C . Sheet bend
D . Two half hitche
-
“REDUCE SWING AS RAPIDLY AS POSSIBLE”IS THE MEANING OF（）.
A . A、MIDSHIPS
B . B、HARD-A-PORT
C . C、STEADY
D . D、STEADY AS SHE GOES
-
Intercoolers installed on starting air compressors, reduce the possibility of（）
A . dust entering the high pressure stage
B . lube oil carbonization
C . discharge pulsations
D . inter-stage vapor lock
-
Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to（）.
A . flashing point
B . combustion point
C . auto-ignition point
D . lower explosive limit
-
Increasing the temperature of a fuel will reduce its （）.
A . viscosity
B . pressure
C . resistance
D . setting point
-
To reduce the amount of catenary you may（）.
A . shorten the hawser or increase the tug's speed
B . lengthen the hawser or reduce the tug's speed
C . place your tug in irons
D . make a sharp tur
-
One method of reducing the length of radio transmissions without distorting the meaning of your words is by using（）.
A . slang
B . secret codes
C . procedure words
D . analogie
-
The rated operating time of a self-contained breathing device may be reduced in actual use because of（）.
A . pressure differences in the atmosphere
B . the length of the hose attached to the facepiece
C . the physical exertion of the person wearing the device
D . spaces containing poisonous vapor
-
Magnets in the binnacles of magnetic compasses are used to reduce the effect of（）.
A . deviation
B . variation
C . local attraction
D . All of the above
-
Repairing damage to the hull of a ship at or above the waterline reduces the threat of（）.
A . free surface effects
B . capsizing the ship
C . continued progressive flooding
D . wind overturning moment
-
Sub-cooling is a method of reducing the temperature of the liquid refrigerant below its （）.
A . freezing point
B . floc point
C . condensing temperature
D . compression temperature
-
The use of （）in many ways reduces staffing needs, minimizes in transit damage and theft, shorten time in transit because of reduced port turnaround time.
A . Container
B . Supertanker
C . Pallet
D . Integration
-
If you reduce the shortage of the cargo（）50％，I’ll sign.
A . in
B . by
C . for
D . with
-
Which of the following could potentially reduce the heterogeneous nature of a service product?
-
Action reduces the lion of terror to an ant of equanimity.
-
Because of over-hunting, the number of certain types of whales has been reduced so greatly that they are____ becoming extinct.
-
The price of such material was reduced__ .
A.by 18 percent
B.to 18 percent
C.at 18 percent
D.for 18 percent
-
The Canadian government didn't want to reduce cod. catches pre-1992 because they were worried about ______.
A．drastic measures
B．the ecological effects
C．the marine ecosystem
D．possible rising unemployment
-
Many objects in daily use have clearly been influenced by science, but their form. and function, their dimensions and appearances were determined by technologists, artisans, designers, inventors, and engineers-using nonscientific modes of thought. Many features and qualities of the objects that a technologist thinks about can't be reduced to unambiguous verbal descriptions; they are dealt with in the mind by a visual, nonverbal process. In the development of Western technology, it has been nonverbal thinking, by and large, that has fixed the outlines and filled in the details, and rockets exist not because of geometry or thermodynamics, but because they were first a picture in the minds of those who built them.
The creative shaping process of a technologist's mind can be seen in nearly every artifact that exists. For example, in designing a diesel engine, a technologist might impress individual ways of non-verbal thinking on the machine by continually using an intuitive sense of tightness and fitness. What would be the shape of the combustion chamber？ Where should be the valves played？ Should it have a long or short piston？ Such questions have a range of answers that are supplied by experience, by physical requirements, by limitations of available space, and not least by a sense of form. Some decisions, such as wall thickness and pin diameter, may depend on scientific calculations, but the nonscientific component of design remains primary.
Design courses, then, should be an essential element in engineering curricula, nonverbal thinking, a central mechanism in engineering design, involves perceptions, the stock-in-trade of the artist, not the scientist. Because perceptive processes are not assumed, to entail "hard thinking", nonverbal thought is sometimes seen as a primitive stage in the development of cognitive processes and inferior to verbal or mathematical thought. But it is paradoxical that when the staff of the Historic American Engineering Record wished to have drawings made of machines and isometric views of industrial processes for its historical record of American engineering, the only college students with the requisite abilities were not engineering students, but rather students attending architectural schools;
If courses in design, which in a strongly analytical engineering curriculum provide the background required for practical problem-solving, are not provided, we can expect to encounter silly but costly errors occurring in advanced engineering systems. For example, early models of high-speed railroad cars loaded with sophisticated controls were unable to operate in a snowstorm because a fan sucked snow into the electrical system. Absurd random failures that plague automatic control systems are not merely trivial aberrations; they are a reflection of the chaos that results when design is assumed to be primarily a problem in mathematics.
In the passage, the author is primarily concerned with______.
A．identifying the kinds of thinking that are used by technologists
B．stressing the importance of nonverbal thinking in engineering design
C．proposing a new role for nonscientific thinking in the development of technology
D．criticizing engineering schools for emphasizing science in engineering curricula
-
The price of an article of clothing was reduced from $25 to $20. The reduced price of the article was then increased by x percent to return it to $ 25.
Column A Column B
x 20
A．if the quantity in Column A is greater
B．if the quantity in Column B is greater
C．if the two quantity are equal
D．if the relationship cannot be determined from the information given
-
Which of the following will be reduced by the reconstitution of a security market index？
A、Need for rebalancing.
B、Portfolio turnover.
C、The possibility that unqualified securities are included in the index.
-
Genetically-modified (GM) foodstuffs are here to stay.That’s not to say that food produced by conventional agriculture will disappear, but simply that food-buying patterns will polarize: there will be a niche market for conventional foodstuffs just as there is for organic food.It may even be that GM food will become the food of preference because consumers come to appreciate the health benefits of reduced pesticide use.
Currently there are some 20,000 chemicals in use, but the scientists only have detailed information around 1,000 of them.To see the advantages of GM food you have only to consider the recent press revelation that the average lettuce receives eleven pesticide applications before it reaches the supermarket shelf.I’m sure chemicals and their role in disease will become a big issue in the 21st century as the population of the developed world worries increasingly about its health.
The reason GM food will not go away is that we need a three-fold increase in food production by the year 2050 to keep pace with the world’s predicted population growth to ten or eleven billion.It’s not just a question of more mouths to feed either.What is often forgotten is that all these extra people will take up space, reducing the overall land available for agriculture.
The world has 800 million hungry people.Until now, food supplies have been increased by improved varieties, pesticides and artificial fertilizers: the green revolution.Now we’re on the edge of a new one: a genetic revolution.
It may well be that in the long term it is the developing world that benefits most from GM food.It is true that for the next years or so GM crops may be too expensive.
6. According to the passage, food supplies have been increased by all the following except_____________.
A.pesticides
B.artificial fertilizers
C.improved varieties
D.transportation
7.How many chemicals are still less familiar to the scientists？()
A.20,000.
B.1,000
C.19,000
D.21,000.
8.Why will people prefer GM food in the future？()
A.Because it uses less pesticides.
B.Because it is much cheaper.
C.Because the production is increased.
D.Because it is organic food.
9.Which of the following is NOT true？()
A.By 2050, the world population will grow to ten or eleven billion.
B.In the 21st century, GM food will take the place of conventional food.
C.More and more people will reduce the overall land available for farming.
D.More and more people will consume more food and occupy more space.
10.The author’s attitude towards GM food is _______.
A.negative
B.positive
C.critical
D.uncertain
-
If the price of harmful addictive substances goes up, it will reduce the number of ca
是
否
-
After some water reducing agent is used into concrete, the function of the agent is（）if some water is reduced
A．to improve concrete mechanics
B．to reduce concrete cost
C．to change concrete workability
D．to increase concrete flowability
