to use gloves to pick up the item.
to squat and lift from the legs.
to have two people bend down and pick the item up.
to bend down and lift the item up.
第1题：
What cargo does a jumbo boom or heavy derrick used for lifting?
第2题：
A. to use gloves to pick up the item.
B. to squat and lift from the legs.
C. to have two people bend down and pick the item up.
D. to bend down and lift the item up.
第3题：
An automobile sling is used for ________
A.lifting aircraft and helicopters
B.lifting any kinds of cargo
C.lifting the heavy boxes
D.lifting cars and trucks
第4题：
第5题：
The universal lifting spreader is a lifting device used on ______．
A.dockside container cranes
B.shipboard container cranes
C.straddle trucks
D.straddle cranes
第6题：
A、Items.Remove
B、Items.Clear
C、Items.RemoveAT
D、Items.Move
第7题：
Which safety precaution（s）should be observed during crane operations ________．
A.Checking for proper lifting from beneath the load during cargo operations
B.Using the proper slings or other lifting devices during cargo operations
C.Relaying communications to port agents on the pier during cargo hoists
D.All of the above
第8题：
以下哪项不是动脉瘤栓塞的技术
A.篮筐技术(basket technique)
B.双微导管技术(double microcatheter technique)
C.球囊辅助成形技术(balloon Remode-ling technique)
D.支架技术(Stent technique)
E.微弹簧圈移位(migration of coils)
第9题：
Mechanical lifting of air by the upslope slant of the terrain is called ______.
A.vertical lifting
B.convective lifting
C.advective lifting
D.topographic lifting
第10题：
