2021职业技能鉴定船员证试题共用题干题解析(04.11)

1. [单选题]You may BEST turn a twin-screw vessel about，to the right，in a narrow channel by using ______.

A. Both engines ahead and helm
B. One engine only
C. Port engine ahead and the starboard engine astern
D. Both engines astern and use helm

2. [单选题]脊柱是由______椎骨、一块骶骨和尾骨组成。

A. 7块
B. 12块
C. 24块
D. 28块

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