单项选择题
Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited（）.
A.It is required on all vessels
B.It may be located in a conspicuous place in the wheelhouse
C.It may be located at the bilge and ballast pump control station
D.All of the above
相关考题
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单项选择题
Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane（）.
A.Taglines are wire rope purchases that raise and lower the jib
B.Taglines are wire ropes for horizontal positioning of the rider block
C.Taglines can be fastened to corners of vehicles or containers
D.The crane might not have taglines installed in its rigging system -
单项选择题
Which statement comparing a shipboard crane to conventional gear is TRUE（）.
A.Cranes are more difficult to secure for sea
B.The spotting area of the conventional gear is larger
C.A crane operator requires more training than the winch operator of a yard and stay rig
D.The yard and stay rig is more flexible in its ability to handle a wider variety of cargoes -
单项选择题
Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.
A.Guy
B.Shroud
C.Spider
D.Topping lift
