单项选择题
A.octagonal pillar B.H Beam pillar C.I Beam pillar D.circular type pillar
The normal tendency for a loaded tanker is to（）.A.hogB....
单项选择题The normal tendency for a loaded tanker is to（）.
A.hog B.sag C.have a permanent list D.be very tender
The maximum theoretical stress that can be developed on...
单项选择题The maximum theoretical stress that can be developed on a guy in a yard and stay rig is limited by the（）.
A.lifting capacity of the winch B.location of the boom C.position of the guy D.weight of the load
The load chart of a crane enables the operator to combi...
单项选择题The load chart of a crane enables the operator to combine the load radius with boom length to determine the（）.
A.maximum counter weight required B.minimum horsepower required C.hoist rope strength D.allowable load
