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
您可能感興趣的試卷
你可能感興趣的試題
A.exposure to inclement weather conditions
B.carelessness
C.the use of improper gear
D.moisture caused by condensation
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
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
A.Cleanly/during
B.Clear/meanwhile
C.Clean/between
D.Clean/prior to
A.slipway
B.graving dock
C.ground warp
D.caisson dock
最新試題
When discharging an oil cargo，the first consideration is to（）.
When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.
Which statement comparing a shipboard crane to conventional gear is TRUE（）.
The net productivity per gang-hour can be improved through a decrease of（）.
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
How should you signal the crane operator to hoist（）.
The item（）is not the advantage of the hydraulic winch．
Most pedestal crane power is provided by（）.
What does “evel-luffing” accomplish during crane operations（）.
Sudden starts or stops of the boom is likely to cause all of the following except（）.