更多"If in doubt as to the true water le"的相关试题:
[单项选择]Which statement is TRUE when comparing cold and warm fronts?（）
A. Cold fronts are more violent and of shorter duration
B. Cold fronts are milder and last longer
C. They are very similar with the exception of wind direction
D. Warm fronts are more violent and of longer duration
[单项选择]What is TRUE when operating in fog and other vessels are detected by radar?（）.
A. You should make an ample change to port for a vessel crossing on the starboard bow
B. You should maneuver in ample time if a close-quarters situation is developing
C. You should determine the course and speed of all radar contacts at six minute intervals
D. Long-range scanning will provide early warning of ALL other vessels within the radar's range
[单项选择]The water level in the gauge glass when a boiler is operating is （） when the boiler is shut down.
A. lower than
B. higher than
C. below
D. equal to
[单项选择]When checking the liquid level in a tank, you should position yourself （）.
A. on the windward side of the opening
B. on the leeward side of the opening
C. at a right angle to the wind direction
D. so that the obstruction of your body will protect you from the fumes
[单项选择]When a boiler is operating, the water level in the gauge glass reads （） when the boiler is shut down.
A. lower than
B. higher than
C. as much as
D. the same as
[单项选择]If found oil when we open low oil level plug of separator, it indicates （）
A. the separator is overload
B. the monitor equipment of separator fails
C. the discharge pump of separator can not work
D. the temperature of oil water is low
[单项选择]When changing from a compass course to a true course you should apply（）.
A. variation
B. deviation
C. variation and deviation
D. a correction for the direction of current set
[单项选择]The apparent wind can be zero when the true wind is from（）.
A. ahead and equal to the ship's speed
B. astern and equal to the ship's speed
C. ahead and equal to twice the ship's speed
D. astern and equal to twice the ship's speed
[单项选择]A true bearing of a charted object，when plotted on a chart，will establish a （）.
A. fix
B. line of position
C. relative bearing
D. range
[单项选择]The correct procedure for giving an auxiliary boiler a bottom blow, is to begin（）
A. when the boiler has been secured long enough for most solids to settle
B. when the boiler has been cooled to ambient temperature
C. only after raising the water level to within 0~5 inch of the high water cutout only
D. after bypassing the low pressure
[单项选择]Which option is true when calculating round-trip delay in IP SLA operations？（）
A. The processing time on the end routers is only assessed for operations that involve the responder.
B. The processing time on the end routers is only assessed for operations that involve the transmitter.
C. The processing time on the end routers is only assessed for operations that involve both the responder and the transmitter.
D. The processing time on the end routers is not assessed for neither the responder nor the transmitter.
[单项选择]One of the main purposes of refractories in a boiler furnace is to（）
A. help preheat the air for the furnaces
B. help preheat the feedwater
C. protect economizer from excessive heat
D. prevent excessive furnace heat losses
[单项选择]Water may boil up around the stern of a vessel in a channel due to（）.
A. slack water when upbound
B. shallow water
C. a cross current
D. a head current
[单项选择]If both the “high level” and “low level” alarms come on for the same address of a centralized control console, the most likely problem is a/an （）.
A. sensor failure
B. failed alarm
C. low level
D. extremely high level
[单项选择]When can routine communications be resumed when radio silence has been imposed?（）
A. After determining that the frequency or channel appears to be no longer in use
B. After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications
C. Routine communications can resume after the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded
D. If，in the Master's opinion，communications on that frequency will interfere with emergency communications
[填空题]It is
when
you nearly lose someone
when
you become
fully
conscious of how much you value
them
.
[单项选择]（）英文称作Level of Details，也叫作Level of Development。描述了一个BIM模型构件单元从最低级的近似概念化的程度发展到最高级的演示级精度的步骤。
A. 模型协同程度
B. 信息粒度
C. 模型可视化程度
D. 模型的细致程度
[单项选择]IS-IS中，同时拥有Level-1和Level-2链路状态信息的是（）。
A. ES
B. Level-1IS
C. Level-2IS
D. Level-1-2IS
