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单项选择题

While sailing in ballast under normal weather and sea condition, the basic parameter which is used to restrict the fuel injection of main engine is
A.the exhaust temperature
B.the speed of main engine
C.the turbine rotation speed
D.the power of main engine

A.the
B.the
C.the
D.the
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货币乘数被用来确定________。
A.当美联储购买政府有价证券时，货币基础的增加幅度
B.当货币基础增加时，货币总量的增加幅度
C.当货币总量增加时，货币基础的增加幅度
D.当法定准备金率提高时，货币总量的增加幅度
E.当美联储出售政府有价证券时，货币基础的增加幅度
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Moisture is removed from a refrigeration system by
A.bleeding refrigerant from the condenser
B.opening a drain petcock on the oil separator
C.condensing the water in the heat exchanger
D.using a dehydrator cartridge
A.bleeding
B.opening
C.condensing
D.using
单项选择题
When checking zinc plates in the refrigerating system condenser, you should
A.paint and insulate the plates to prevent corrosion
B.renew the plates at each inspection
C.replace the zincs if deteriorated by 50%
D.file the plates to change the negative value
A.paint
B.renew
C.replace
D.file
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