更多"The steady current circling the glo"的相关试题:
[单项选择]Steady precipitation is typical of（）.
A. coming cold weather conditions
B. a warm front weather condition
C. high pressure conditions
D. scattered cumulus clouds
[单项选择]The steady state difference between the control point and the value of the controlled variable, corresponding with the set point, is known as （）
A. dead band
B. control point
C. deviation
D. offset
[单项选择]When good and steady service conditions have been achieved, the running surfaces of the piston rings and cylinder liner will be（）In addition, the rings will move freely in the grooves and also be well oiled intact, and not unduly worn.
A. hazy light
B. hazy light brown
C. hazy light blue
D. hazy light grey
[单项选择]When using the anchor to steady the bow while approaching a dock you must be aware of the fact that（）.
A. the vessel will tend to take a large sheer towards the side where the anchor is down
B. steering control is ineffective in trying to turn to the side opposite to that of the anchor being used
C. the anchor cable must never lead under the hull
D. using an offshore anchor decreases the chances of the anchor holding
[单项选择]The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.
A. temperature
B. density
C. deflection
D. speed
[单项选择]Unlike the globe valve, gate valves give full bore flow without change of direction, such a valve is not suitable to partially open operationAccording to the above sentence, which of the following statements is not true?（）
A. The globe valve may be suitable for partially open operation
B. The globe valve will give full bore flow with change of direction
C. The gate valve gives full bore flow with change of direction
D. The gate valve is suitable for full bore operation only
[单项选择]The globe valve has a bulbous body, housing a valve seat and screw down plug or disc arranged at right angles to the axis of the pipeAccording to the above sentence, which of the following statements is not true?（）
A. The profile of the valve is like a globe
B. The valve seat is set into the bulbous body
C. The plug or disc of the valve is made vertical to the axis of the pipe
D. The valve seat is located at right side of the plug or disc
[单项选择]A coastal current（）.
A. is generated by waves striking the beach
B. flows outside the surf zone
C. flows in a circular pattern
D. is also known as a longshore current
[名词解释]故障电流（fault current）
[单项选择]The alternating current generator supplying a load has a voltage drop resulted from the loadWhen the load has a lagging power factor this voltage drop （）.
A. is small
B. may be neglected
C. is useful
D. is considerable
[单项选择]The frequency of the alternating current generated by a synchronous generator is governed by the speed and the（）
A. full excitation
B. load
C. power factor
D. number of poles
[单项选择]Current measuring instruments must always be connected in （）
A. series with a circuit
B. parallel with a circuit
C. series-parallel with a circuit
D. delta with the shunt
[单项选择]Set of current is（）.
A. its velocity in knots
B. direction from which it flows
C. estimated current
D. direction toward which it flows
[单项选择]Current refers to the（）.
A. vertical movement of the water
B. horizontal movement of the water
C. density changes in the water
D. None of the above
[单项选择]For full information regarding the current circulation of the Indian Ocean，（） Sailing Direction，Current Atlas，etc．
A. watch
B. look for
C. see
D. regard
