A、Lower
B、Top
C、Hoist
D、Take down
更多“（）(降下)the derrick, please.”相关的问题
A、A. Lower the derrick, please. B、B. Top the derrick, please. C、C. Swing the derrick, please. D、D. Adjust the derrick, please.
A、A. derrick boom rest B、B. derrick head C、C. derrick mast D、D. derrick guy
A、Please have the damaged derrick readjusted. B、Please have the damaged derrick repaired. C、Please have the damaged derrick painted. D、Please have the damaged derrick brushed.
A、A. Will you please swing the heavy derrick over the hatch? B、B. Will you please swing the derrick over the hatch? C、C. Will you please lower the derrick over the hatch? D、D. Will you please top the heavy derrick over the hatch?
A、A. When the derrick is stopped, the guy must be stowed. B、B. When the derrick is stopped, the guy must be topped. C、C. When the derrick is stopped, the guy must be lowered. D、D. When the guy is stopped, the derrick must be stowed.
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.
A、single derrick B、derrick C、heavy derrick D、deck
A、Please swing the derrick to wharf side. B、Just go down the derrick , please. C、Just a moment , please. D、Please swing the derrick to inboard.
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.
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