单项选择题
When using slings，cargo handlers should take all the following precautions except（）.
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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When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.
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 -
单项选择题
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
A.Should not exceed
B.Must be up to
C.Should exceed
D.Should be about -
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When discharging an oil cargo，the first consideration is to（）.
A.get the bow up
B.discharge from the wings first
C.discharge from the centerline tanks first
D.discharge from amidships first
