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[单选] At an unsheltered anchorage the chief engineer officer shall consult with the master whetheror not to maintain an underway watch“An underway watch” means()

A . a watch which is kept with lower standard
B . a watch which is kept when the ship isnt sailing
C . a watch which is kept when the ship is sailing
D . a watch which is kept when the ship is in a restricted visibility area

自动过分相感应接收器安装位置应满足感应接收器的底面中心位置距离钢轨面高度(),距离钢轨中心()。 The MARPOL Convention is the main international convention() about marine pollution prevention。 covering marine protection of life。 about marine。 about ship and port security。 私人银行产品服务以()为中心。 利益。 考核。 产品。 客户。 测量主回路501C-大地间绝缘值≥(),使用()等级兆欧表。 私人银行客户开户账户可分为()和()账户。 A.单一;联名。 B.单一;合并。 C.储蓄;投资。 D.储蓄;转账。 At an unsheltered anchorage the chief engineer officer shall consult with the master whetheror not to maintain an underway watch“An underway watch” means()
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