A. TT,TransitionTraining B. DT,DifferenceTraining C. RT,RecurrentTraining D. RQT,RequalificationTraining
A. 离心泵 B. 齿轮泵 C. 往复泵
A. 1111 B. 1110 C. 1101 D. 1011
A. 0.1 B. 0.3 C. 0.6
A. 85% B. 75% C. 65%