The most doubtful and unpredictable factor in a mooring system is the（）.<br>A:ability of the anchors to hold in a seabed<br>B:anchor chain catenary length<br>C:variability of the fairlead<br>D:angle of the flukes

The most doubtful and unpredictable factor in a mooring system is the（）.
A:ability of the anchors to hold in a seabed
B:anchor chain catenary length
C:variability of the fairlead
D:angle of the flukes

出自：海船船员证

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