Which statement comparing a shipboard crane to conventional gear is TRUE（）.<br>A:Cranes are more difficult to secure for sea<br>B:The spotting area of the conventional gear is larger<br>C:A crane operator requires more training than the winch operator of a yard and stay rig<br>D:The yard and stay rig is more flexible in its ability to handle a wider variety of cargoes

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

出自：海船船员证

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