题目内容
活塞环磨坏了。
A. The piston rings were taken out.
B. The piston was cracked.
C. The piston was broken.
D. The piston rings were worn out.
查看答案
正确答案
搜索结果不匹配?点我反馈
更多问题
测试发电机
A. the engine room.集控室
B. test the generator.测试
C. Go ahead to front of the team.队的前面
D. Try the main engine.
每隔七天
At 7-day's interval.
B. At 8-day's interval.
C. At regular interval.规律的间隔
D. Irregularly.不规则
打开蒸汽阀。
A. Push the button of power supply .
B. Check everything .
C. Start oil pump.
D. Open the steam valve.