The officer in charge of the engineering watch shall ensure that at all times bridge orders relating to changes in （） of operation are immediately implemented.<br>A:ahead or astern<br>B:fore or aft<br>C:up or down<br>D:speed or direction

The officer in charge of the engineering watch shall ensure that at all times bridge orders relating to changes in （） of operation are immediately implemented.
A:ahead or astern
B:fore or aft
C:up or down
D:speed or direction

出自：海船船员证

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