Many sheath-screw davits have markings to indicate the maximum angle to which they should be cranked out. If the angle is exceeded，the davit（）.<br>A:may jam against the stops<br>B:will not automatically position the boat at the embarkation station<br>C:screw may come out of the sheath<br>D:will chafe against the falls and may cause their failure

Many sheath-screw davits have markings to indicate the maximum angle to which they should be cranked out. If the angle is exceeded，the davit（）.
A:may jam against the stops
B:will not automatically position the boat at the embarkation station
C:screw may come out of the sheath
D:will chafe against the falls and may cause their failure

出自：海船船员证

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