A.Ensure that slings are securely fastened around the load
B.Avoid careless winch operations，especially when handling fragile cargo
C.Exercise care when using hooks，crowbars，and similar tools
D.Keep the loads as close to the rail or deck as possible
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A.Arch the back to add strength to the muscles
B.Bend his knees and lift with his legs
C.Bend his back and stoop
D.Bend his back and stoop with arms straight
A.Should not exceed
B.Must be up to
C.Should exceed
D.Should be about
A.get the bow up
B.discharge from the wings first
C.discharge from the centerline tanks first
D.discharge from amidships first
A.Cranes are able to pick up and drop loads over a greater spotting area
B.Increased safety because the deck is clear of running and standing rigging
C.Simplicity of operation of the crane by its operator
D.All of the above
A.It allows for rotation of the hook in the single mode
B.It is required to“twin-up”30-ton pedestal cranes
C.It is used to pick up light loads
D.It is used to rigidly connect two cranes
最新試題
What does “evel-luffing” accomplish during crane operations（）.
Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom（）.
The item（）is not the advantage of the hydraulic winch．
Sudden starts or stops of the boom is likely to cause all of the following except（）.
They（）loading at 1400 hours．
Damage by（）shall not be considered as handling damage.
If an attempt is made to hoist a load that exceeds the capacity of an electric winch，an overload safety device causes a circuit breaker to cut off the current to the winch motor（）.
Which of the following statement（s）is/are FALSE regarding a twin pedestal crane set （）.
Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.
Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.