Gasoline vapor tends to collect（）.

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• Fueling activities（）waste liquids and vapor releases to air.

  A . commence B . generate C . give D . have

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• The first treatment given to a person overcome by benzene vapor should be to（）.

  A . remove them to fresh air B . flush their face with water for about 5 minutes C . stand them up and walk them around D . remove their clothing and wrap them in blanket

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• River currents tend to（）.

  A . Pick up speed where the channel widens B . Run slower in the center of the channel C . Hug the inside of a bend D . Cause the greatest depth of water to be along the outside of a bend

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• Gasoling fumes tend to（）.

  A . settle near the bottom of the blige B . settle near the top of the bilge C . settle evenly throughout all levels of the bilge by mixing with air D . disperse to atmosphere

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• The compressor suction line conveys the refrigerant vapor from （） to （）.

  A . condenser；evaporator B . evaporator；compressor C . compressor；condenser D . None of the above

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• The weight of liquefied petroleum gas vapors as compared to air is（）.

  A . variable B . the same C . lighter D . heavier

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• When crossing a front,isobars tend to（）.

  A . change from smooth curves within the air mass to sharp bends at the front B . change from sharp bends within the air mass to smooth curves at the front C . pass smoothly across the front with no change D . become closer together at the front and pass through in straight line

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• Upon completion of fueling a gasoline driven vessel it is necessary to（）.

  A . keep ports，doors，windows，and hatches closed B . start engines immediately C . ventilate before starting engine D . None of the above

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• Gasoline fumes tend to（）.

  A . settle near the bottom of the bilge B . settle near the top of the bilge C . settle evenly throughout all levels of the bilge by mixing with air D . disperse to atmosphere

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• The tendency of a flammable liquid to vaporize is indicated by its （）.

  A . ignition temperature B . flash point C . flammable range D . convection index

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• The heat used to change a liquid to a vapor is called （）.

  A . latent heat of fusion B . latent heat of vaporization C . specific heat of vaporization D . latent heat of the ga

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• A diesel engine is similar to a gasoline engine except that the former has no （）.

  A . cross-head B . cylinder C . connecting rod D . spark plug

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• Which statement is TRUE concerning gasoline vapors on board a vessel（）.

  A . They are heavier than air and will settle in the lowest part of the vessel B . They are lighter than air and will settle in the highest part of the vessel C . They should be vented into the engine to improve combustion D . They should be vented into the wheelhouse

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• Love tends to＿ us .

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• We all_______like those similar to us. A. intend to B. tend to C. tending to D. incline to

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• 原文:Gasoline is a fuel whose vapor is readily explosive..译文:汽油是一种燃料,其油气 。

  A、很容易蒸发 B、 很容易爆炸

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• Organizational cultures tend to resist change.

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• Adolescents tend to be great experimenters.

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• Douglas Gentiles research tends to test

  A．whether video games can produce long-term impact on the youth. B．the effect of playing pro-social games on the youth. C．whether the youth are able to classify different video games. D．the effect of playing violent games on the youth"s moral fabric.

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• Nowadays, a husband tends to______.

  A．play a greater part in looking after the children B．help his wife by doing most of the housework C．feel dissatisfied with his role in the family D．take a part-time job so that he can help in the home

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• the english tend to appreciate punctuality in appointments.（)

  是 否

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• Learning effects tend to be（）

  A．thesameregardlessofwhetherataskissimpleorcomplex．不管任务是简单还是复杂,都是一样的。 B．moresignificantwhenatechnologicallysimpletaskisrepeate D．,当一个简单的技术任务被重复时更显著。 C．lesssignificantwhenatechnologicallycomplextaskisrepeate D．当一项技术复杂的任务被重复时,它的显著性就会降低。 D．moresignificantwhenatechnologicallycomplextaskisrepeate D．当一个复杂的技术任务被重复时更显著。

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• Americans tend to suffer from parochialism.（)

  是 否

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• Credit spreads tend to widen as:

  A、The credit cycle improves. B、Economic conditions worsen. C、broker-dealers become more willing to provide capital.

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