（）(调高) the derrick, please.
把吊杆甩向码头。（）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.
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Top the derrick, please.（）A、请摆动吊杆B、请放低吊杆C、请调高吊杆D、请移动吊杆
请修理一下受损吊杆。（）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.
Do you want the derrick adjusted upwards or downwards? （）A、Top the derrick.B、Yes, I do.C、No, I don’t.D、Sorry, I don’t know.
请把吊杆甩到舱口上方好吗？（）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?
The （）(吊杆托架) supports the derrick.A、derrick boom restB、derrick headC、derrick mastD、derrick guy
This （）was repaired in Singapore.A、damaged derrickB、damaging derrickC、derrick to be damagedD、derrick
