武钢冷轧1700轧机轧机是以()命名。
A. 辊身长度
B. 辊径
C. 名义直径
D. 其他
Supply the ()before starting an air compressor.
A. fuel oil
B. cooling water
C. steam
D. power
CRH5司机室侧窗可以作为紧急出口使用。
A. 正确
B. 错误
All of the following are engaged in fishing EXCEPT().
A vessel trawling
B. A vessel trolling
C. A vessel setting nets
D. A vessel tending line