According to this passage, if the cylinder non-return valve were not leaky
A. an explosion would not be caused
B. there still would be a danger of explosion
C. oil would not deposit in the air pipe
D. pipe lines would not have to be drained
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Cold weather starting of a diesel engine is more difficult than warm weather starting due
A. use of low viscosity oil in cold weather
B. increased moisture content of inlet air in cold weather
C. increased drag of pistons and bearings due to increased oil viscosity
D. higher compression pressures reached due to smaller clearances existing in the engine during cold weather
When using a fuel with a higher than normal sulfur content in an auxiliary four stroke diesel engine, you may
A. maintain higher than normal jacket water temperature
B. change the lube oil more frequently than normal
C. maintain a higher air-box temperature than normal
D. maintain a higher air-box pressure than normal
管理美国货币的数量是哪个机构最重要的责任？________。
A. 美国国务院
B. 美国州政府
C. 美国财政部
D. 美国联邦储备
E. 美国造币厂
美国花旗银行给美联储售出了10万美元的政府有价证券。这笔交易会立即________。
A. 降低货币数量
B. 降低银行支票存款
C. 增加银行准备金
D. 增加银行资产
E. 增加银行法定准备金
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