deep water
shallow water
stiff soils
soft soils
第1题：
In winter, traffic accidents occur____ on the highway.
A frequently B suddenly C usually D rapidly
第2题：
TO SECURE A VESSEL IN A PARTICULAR PLACE BY MEANS OF CHAINS OR ROPES MADE FAST TO THE SHORE，TO ANCHORS，OR TO ANCHORED MOORING BUOYS，OR TO RIDE WITH BOTH ANCHORS DOWN defines ______．
A.To moor
B.To berth
C.To anchor
D.To ride at anchor
第3题：
A.Because people do not realize the harmfulness of it.
B.Because contaminated food products are easy to produce and sell.
C.Because those food manufacturers only focus on making money.
第4题：
第5题：
An LWT anchor often has difficulty tripping in ______．
A.Sand
B.Soft soil
C.Stiff clay
D.Heterogeneous soil
第6题：
The anchors on the bow are known as ______.
A.bower anchors
B.kedge anchors
C.spare anchors
D.stream anchors
第7题：
You are proceeding down a channel and lose the engine（s）．You must use the anchors to stop the ship．Which statement is true ________．
A.Pay out all of the cable before setting up on the brake to insure the anchors dig in and hold
B.For a mud，mud and clay，or sandy bottom pay out a scope of 5 to 7 times the depth before setting up on the brake
C.Use one or both anchors with a scope of twice the depth before setting the brake
D.Drop the anchor to short stay and hold that scope
第8题：
And the cars are tested for defects before leaving the factory.
A．functions
B．faults
C．motions
D．parts
第9题：
The BEST holding ground for conventional anchors is ______．
A.Sand
B.Very soft mud
C.Shale
D.Rock
第10题：