A.when approved by the lockmaster
B.when locking downbound
C.at no time
D.during high water only
您可能感興趣的試卷
你可能感興趣的試題
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 port State control officer may ensure that（）are exhibited in conspicuous places throughout the ship.
Where advance freight is agreed upon，payment does not depend on delivery and must be made （）the ship is lost and the cargo never delivered.
The direction in which a vessel is steered is the course. The path actually followed is the （）.
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? （）
（） may not justify detention.
Which channel and mode should be used when initiating a distress alert transmission（）.
The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to（）.
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? （）
Which statement about radio navigational warnings is TRUE（）.