52._________A.. aggressionB. anxietyC. pressureD.

_____uses one or two high pressure pumps for all the cylinders with one more____ standby, while______have a separate high－pressure pump for each cylinder.

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Stress and______are symptoms of life in modern society.A．leisureB．anxietyC．nervousnessD．em

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_________(57)A.pressure B.restraintC.load D.weight

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______(50)A.There’s more pressure to get married

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______(49)A.There’s more pressure to get married

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______(48)A.There’s more pressure to get married

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______(47)A.There’s more pressure to get married

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