Reasons behind the boom of America-made goods include the following EXCEPT______.

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• What is/are the advantage（s）of cranes over conventional cargo booms（）.

  A . Cranes are able to pick up and drop loads over a greater spotting area B . Increased safety because the deck is clear of running and standing rigging C . Simplicity of operation of the crane by its operator D . All of the above

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• On a ship’s crane，the load chart relates the allowable load to the combination of the boom length and（）.

  A . winch speed B . boom strength C . load radius D . cable strength

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• （） are two vertical supports，usually steel，one each side of the centerline of the ship used to support booms.

  A . Shrouds B . King posts C . Stays D . Turnbuckle

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• Sudden starts or stops of the boom is likely to cause all of the following except（）.

  A . breaking a cargo runner B . parting guys topping lifts C . carrying away a block D . overheating the resistors and eventually burning out

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• The main advantage and chief characteristic of a Steulchen boom is that it can be（）.

  A . operated by one winchman B . cradled on deck C . swung from one hatch to the adjacent hatch D . collared to the mast

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• A tackle by which the outer end of a boom is raised and lowered is the topping（）.

  A . boom B . lift C . raise D . tackle

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• For which of the following reasons did the west move out of cities?

  A . They did not need to pay higher taxes when living in suburbs. B . Car industry rapidly developed and motorways swiftly emerged. C . They discriminated against the black people living in city centers. D . The richer they grew, the more demand they had on privacy an apace.

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• There are many reasons why customers lack sufficient security measures on the network. Which two reasons for insufficient security are typical of the customers today?（）

  A . the use of hosted email services eliminating the need for local security B . the perceived costs of security solutions C . the lack of risk analysis D . the lack of threats to their network E . the belief that free security tools are sufficient F . the desire to avoid unnecessary technologie

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• Stress on the topping lift of a swinging boom can be reduced by（）.

  A . rigging a back stay B . raising the boom C . increasing the mechanical advantage of the cargo purchase D . taking all slack out of the preventer

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• For a given weight of cargo，the stress on the heel block of a cargo boom（）.

  A . increases as the cargo closes the head while hoisting B . increases if the cargo runner is doubled up C . decreases as the boom is topped to a greater angle D . is determined by the thrust stresses on the boom

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• The load chart of a crane enables the operator to combine the load radius with boom length to determine the（）.

  A . maximum counter weight required B . minimum horsepower required C . hoist rope strength D . allowable load

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• The pivot pin at the base of a sheath-screw boom davit must be（）.

  A . inserted each time before the booms are cranked out B . periodically removed for inspection and lubricated C . replaced at each inspection for certification D . in the locked position after the boat is cradled and griped dow

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• What is meant by the term“luffing the boom”of a crane（）．

  A . Stopping the boom B . Topping or lowering the boom C . Moving the boom left or right D . All of the above

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• On a ship crane，the load chart relates the allowable load to the combination of boom length and（）.

  A . boom angle B . boom strength C . load radius D . cable strength

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• According to the writer of this passage, the bio-fuel boom is _____ global warming.

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• In the sentence “Behind the merger boom lies the growing corporate conviction”, which of the following has the closest meaning with the word “conviction”?

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• What are the possible reasons of baggage Lost?

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• With domestic market booming, the country has expectations of economic ____ ( 复苏 ).

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• The boom of American agriculture is mainly due to the generosity of nature.

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• What are the reasons for the persistence of ethnocentrism, stereotyping, prejudice and racism?

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• Which of the following is NOT mentioned as one of the most common reasons for injuries？

  A. Skating with wrist and elbow wounds. B. Losing one's balance due to road debris. C. Being unable to stop due to high speed. D. Falling down when doing a trick.

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• One of the reasons for the increase of rationalization is that __________.

  A.government had more authority than ever B.intuition played a more important role in action C.capitalism developed quickly D.economy grew rapidly

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