大修理时，对整修后的曲轴（）进行静平衡或动平衡试验。
A、必须
B、可以
C、方可
D、视需要
参考答案：A
It is his great pleasure to be ____________ with the highest reward by the president.
A．provide
B．presented
C．made
D．represented
巡视工作结束（）内应录入系统。
