备双锚。（）<br>A:Let go both anchors.<br>B:Drop both anchors.<br>C:Stand by two anchors.<br>D:Stand by both anchors.

备双锚。（）
A:Let go both anchors.
B:Drop both anchors.
C:Stand by two anchors.
D:Stand by both anchors.

出自：船舶水手证

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