you can stop within your visibility range
you can take proper and effective action to avoid collision
you are traveling slower than surrounding vessels
no wake comes from your vessel
第1题：
In determining a safe speed ________ shall not be among those taken into account．
A.the state of visibility
B.the power of the vessel
C.the traffic density
D.the maneuverability of the vessel
第2题：
The governor brake shall be capable of controlling the speed of lowering a fully equipped lifeboat with its complement of persons on board at ______．
A.safe speed only specified
B.not less than 120 feet per minute
C.not more than 120 feet per minute
D.not more than 90 feet per minute
第3题：
In reducing engine speed to an efficient propeller speed by the use of reduction gears, _______.
A.speed and torque are both reduced
B.speed is reduced and torque remains unchanged
C.speed is reduced and torque is increased
D.speed is sometimes unchanged while torque is increased
第4题：
What is the most common cause of network congestion？（）
第5题：
Every vessel should at all times proceed at a safe speed.Safe speed is defined as that speed where ______.
A.no wake comes from your vessel
B.you can stop within your visibility range
C.you can take proper and effective action to avoid collision
D.you are traveling slower than surrounding vessels
第6题：
The owner or Master of a towing vessel shall ensure that each person that directs and controls the movement of the vessel can accomplish all of the following EXCEPT ______.
A.evaluate the danger of each closing visual or radar contact
B.adjust speed with due regard for the weather and visibility
C.reduce speed only where local speed limits are posted
D.enter all required test and inspection results in the vessel's log or other record carried on board
第7题：
______is the speed of a vessel allowing time for effective action to be taken under prevailing circumstances and conditions to avoid a collision and to be stopped within an appropriate distance．
A.Safe speed
B.Economic speed
C.Proper speed
D.Navigation speed
第8题：
In Beaufort Scale，the wind force 7 with speed of 28-33 knots is defined as ________ ．
A.Moderate gale
B.Near gale
C.Strong gale
D.Whole gale
第9题：
What is the meaning “speed is not of primary importance”?（）
第10题：
aggregation congestion occurring at the core layer where the different distribution layer devices feed traffic to the core-layer switches
speed mismatches when moving from a low-speed LAN environment to a higher speed WAN environment
flapping Ethernet interfaces caused by misconfigured LAN interfaces
flapping serial interfaces caused by misconfigured WAN interfaces
speed mismatches when moving from a high-speed LAN environment to a lower speed WAN environment