You can swing the derrick to starboard side or port side. But do not exceed （）for the union purchase.
- A、120°
- B、90°
- C、60°
- D、100°
正确答案:A
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
You can swing the derrick to starboard side or port side. But do not exceed （）for the union purchase.
微信扫一扫手机做题