A.maximum working pressure
B.bursting pressure
C.safety relief valve setting
D.maximum temperature
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A.handling of cargo cases
B.hanging oilskins
C.sewing canvas
D.splicing small stuff
A.6 inches in diameter and 19 fathoms long
B.6 inches in circumference with 19 strands
C.6 strands with 19 wires in each strand
D.19 strands with 6 wires in each strand
A.12 strands and a two-inch diameter
B.12 strands and a two-inch circumference
C.6 strands and a two-inch diameter
D.6 strands and a two-inch circumference
最新試題
Extended cyclical variations in tensions will cause an anchor chain to break due to（）.
The main function of the core of a wire rope is to（）.
Neglecting friction，you desire to lift a 300 kgs weight with a stress on the hauling part of 100 kgs.Which of the following tackles would you use?（）.
Manila slings should not be used to load（）.
In securing a towing cable，consideration must be given to letting go in an emergency. The possible whip of towlines when released can be overcome by（）.
An anchor winch should be equipped with mechanical brakes capable of holding（）.
After deploying the anchor，a permanent chain chaser is（）.
The standing part of a tackle is（）.
Cribbing is（）.
The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward. This is the signal to（）.