单项选择题
How should you signal the crane operator to hoist（）.
A.With forearm vertical and forefinger pointing up，move hand in small horizontal circles
B.With arm extended downwards and forefinger pointing down，move hand in small horizontal circles
C.Extend arm with fingers closed and thumb pointing upward
D.Place both fists in front of body with the thumbs pointing upward
相关考题
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单项选择题
Damage by（）shall not be considered as handling damage.
A.exposure to inclement weather conditions
B.carelessness
C.the use of improper gear
D.moisture caused by condensation -
单项选择题
Cargo handlers should take the following precautions with the exception of（）to avoid damage from shifting.
A.Keep the loads as close to the rail or deck as possible
B.If cargo is likely to settle，make provisions to secure it after it has settled
C.Thoroughly secure and shore all cargo so that it cannot move
D.hen stowing cargo，avoid leaving empty paces -
单项选择题
Backstays are（）.
A.Running rigging leading aft from the masts
B.Running rigging leading forward from the masts
C.Standing rigging leading aft from the masts
D.Standing rigging from the cross trees to the mast head
