During operation, the （）should check the working condition of the derrick.
- A、foreman
- B、operator
- C、opener
- D、stevedore
正确答案:B
答案解析:有
微信扫一扫手机做题
多做题，通过考试没问题！
船舶水手考试
船舶水手考试
During operation, the （）should check the working condition of the derrick.
微信扫一扫手机做题