单项选择题

The Pilotage-quarantine anchorage，（）between Damen Dao and Qingshan Dao，is defined by the lines（）the given points.

A.situated／connected
B.situated／connecting
C.situating／connected
D.situating／connecting

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单项选择题

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

单项选择题

The lockmaster has given you permission to tie off on the lower guide wall to wait your turn to lock through. What should you be most concerned with? （）

A.A downbound vessel
B.An upbound vessel
C.Current reaction when the lock chamber is being emptied
D.Current reaction when the lock chamber is being filled

单项选择题

The length of chain between the anchor and the end of the pendant line is called the（）.

A.pigtail chain
B.thrash chain
C.crown chain
D.wear chain