1. [单选题]齿轮泵的不对称卸荷槽( )。
A. 应向排出侧偏移
B. 可只设在吸入端
C. 对容积效率影响不大
D. 不影响反转使用
2. [单选题]In fighting a fire in a fuel tank, the FIRST action you should attempt is to _____.
A. secure all sources of fresh air to the tank
B. begin transferring the fuel to other tanks
C. top off the tank to force out all vapors
D. station someone at the fixed CO2 release controls
