单项选择题X 纠错
A. The SWL of the derrick is five tons.
B. The SWL of the heavy derrick is six tons.
C. The SWL of the derrick is six tons.
D. The SWL of the crane is six tons.
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单项选择题
A. Before leaving the harbour, all derricks must be stowed.
B. After leaving the harbour, all derricks must be stowed fore and aft.
C. Before leaving the harbour, all derricks must be stowed fore and aft.
D. Before leaving the harbour, all heavy derricks must be stowed fore and aft.
单项选择题
A. Will you please swing the heavy derrick over the hatch?
B. Will you please swing the derrick over the hatch?
C. Will you please lower the derrick over the hatch?
D. Will you please top the heavy derrick over the hatch?
单项选择题
A. Our derrick has been out of use for a long time.
B. Our heavy derrick has been out of use for a long time.
C. Our crane has been out of use for a long time.
D. Our winch has been out of use for a long time.
单项选择题
A. Don’t shift the guy as you like.
B. Don’t shift the stay as you like.
C. Don’t move the derrick as you like.
D. Don’t move the crane as you like.
单项选择题
A. Lower the derrick, please.
B. Top the derrick, please.
C. Swing the derrick, please.
D. Adjust the derrick, please.
单项选择题
A. When the derrick is stopped, the guy must be stowed.
B. When the derrick is stopped, the guy must be topped.
C. When the derrick is stopped, the guy must be lowered.
D. When the guy is stopped, the derrick must be stowed.
单项选择题
A. As an officer on duty, you must know how to adjust derricks.
B. As a sailor on duty, you must know how to adjust derricks.
C. As a sailor on duty, you must know how to operate cranes.
D. As an officer on duty, you must know how to operate cranes.
单项选择题
A. Many ships have two derricks at each hatch.
B. Many ships have two winches at each hatch.
C. Many ships have two derricks and two winches at each hatch.
D. Many ships have two derricks and two winches at each hatch cover.
单项选择题
A. Heavy derrick is used for lifting large heavy cargo.
B. Derrick is used for lifting large heavy cargo.
C. Heavy derrick is used for lifting dry bulk cargo.
D. Derrick is used for lifting dry bulk cargo.
单项选择题
A. The ship needs loading.
B. The ship needs discharging.
C. The ship needs unloading.
D. The ship needs loading and discharging.
