In the presence of an open flame or hot surfaces, chlorinated flourocarbon refrigerants decomposes and form .
A. petroleum crystals
B. phosgene gas
C. water vapor
D. carbon monoxide
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货币基础________。
A. 是银行必须就任何可能不能归还的贷款所持有的最低准备金
B. 是硬币、联邦储备券以及银行在美联储准备金总和
C. 是关联储持有的黄金和外汇的总和
D. 是美联储持有的政府有价证券和向银行贷款的总和
E. 是硬币、法定准备金和银行贷款的总和
If the jacket water temperature rises rapidly above normal in a diesel engine, you should
A. place standby cooler in operation
B. reduce engine load
C. check thermostatic valve
D. clean sea water strainer
The ability of lubricating oils to resist viscosity changes during temperature changes is
American Petroleum
B. Institute number viscosity index number
C. Seconds Saybolt Furol number
D. Seconds Saybolt Universal number
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