High
Top
Adjust
Lower
第1题:
A.Areyou
B.Wouldyou
C.Canyou
第2题:
The net productivity per gang-hour can be improved through a decrease of ______.
A.cranes/derricks
B.crane/derrick cycles
C.crane/derrick cycle time
D.weight per package
第3题:
Tony:Iced tea,please. 3
第4题:
Top the derrick, please.()
第5题:
The ()is fixed at the bottom of the derrick.
第6题:
If the derrick is overloaded, what will happen?
第7题:
Keep the receipt, please.的意思是:()。
第8题:
Two mineral water, please.()
第9题:
把吊杆甩向码头。()
第10题:
请修理一下受损吊杆。()