A.when approved by the lockmaster
B.when locking downbound
C.at no time
D.during high water only
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A.it increases the likelihood of collision between the towing vessel and the disabled vessel
B.recreational boaters tend to make the heaving line fast to the towed vessel as if it were the towline
C.the monkey fist may injure someone
D.it may reduce the catenary and increase yawing
A.route
B.track
C.heading
D.course over the ground
A.course
B.track
C.heading
D.course over the ground
A.a difference in water pressure
B.the method of breaking up the water stream
C.the length of the applicator
D.All of the above
A.temperature of the air equals the temperature of the seawater
B.atmospheric pressure is 14.7 lbs. per square inch
C.relative humidity reaches 50%
D.air becomes saturated with water vapor
最新試題
The depth（）a shallow patch，lying about 1.3 miles southeastward of Nanshan Tou lighthouse reduces to about 6.1 meters.
The damage to a vessel is over $25，000. Who must notify the nearest Coast Guard Marine Safety or Marine Inspection Office as soon as possible? （）
The design specifications for cranes and crane foundations on ship’s are set and published by the（）.
The disadvantage of using a heaving line to pass a towline is that（）.
The port State control officer or the surveyor authorized by the port State Administration must be aware that（）may be carried on product carriers.
Which instrument is most useful in forecasting fog（）.
While proceeding to a distress site，you hear the words “Seelonce mayday” on the radiotelephone.Which action should you take（）.
Which statement about radio navigational warnings is TRUE（）.
Where the master has not disclosed to the suppliers of necessaries that under an existing time-charter the Charterer is liable for the particular disbursements in question，（）will be liable to such suppliers to that extent.
The dew point is reached when the（）.