If the head pressure of a reciprocating refrigeration compressor is excessive
A. the relief valve should open before the high pressure cutout
B. the relief valve should open and allow the excess refrigerant to flow to the receiver
C. the high pressure cutout switch should operate before the relief valve opens
D. you should close the discharging valve
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现金的货币漏出是________，对货币乘数________影响。
A. 流入银行；没有
B. 流入银行；有
C. 银行外持有；有
D. 美联储持有；有
E. 作为准备金持有；没有
如果法定准备金率是20％，同时货币漏出比率是30％，货币乘数是多少？货币基础增加100亿美元，总的货币数量会发生什么样的变化？
________is supplied with electricity by main switchboard directly not through sub-board on
A. Deck machinery
B. Little power load
C. Some important load machinery
D. Stationary submersible pump
What must be paid attention when watchkeeping in the engine room？
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