If you are bunkering and you close off one tank in the line of tanks being filled，the rate
A. increase
B. decrease
C. stop
D. remain constant
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Butadiene，inhibited，is labeled as a ______．
A. Combustible liquid
B. Flammable gas
C. Flammable liquid
D. Flammable solid
According to the Chemical Data Guide，which reactive group（s）is/are not compatible with the
A. Nitric acid
B. Amides
C. Alcohols，glycols
D. Phenols，cresols
Before discharge of cargo tank ballast is undertaken，______．
A. the deck isolating valve is open
B. flue gas isolating valve
C. blower suction valve
D. blower discharge valve
232交流发电机中的旋转整流器的作用是()。
A. 将交流电变为直流电向直流电网供电
B. 将交流激磁机的输出变为直流电供主发电机激磁
C. 将永磁发电机输出整流后供励磁机激磁
D. 将发电机三相输出整流后供激磁回路自激
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