更多"Routine maintenance of lead acid ba"的相关试题:
[单项选择]The electrolyte in a lead-acid storage battery consists of distilled water and （）.
A. hydrogen chloride
B. calcium chloride
C. sulfuric acid
D. muriatic acid
[单项选择]Routine radio communications should be no more than（）.
A. one minute
B. three minutes
C. five minutes
D. eight minutes
[单项选择]Routine monitoring of a diesel engine should include （）.
A. checking for leaks
B. checking temperatures and pressures
C. listening for abnormal noises
D. all of the above
[单项选择]A person who gets battery acid in an eye should IMMEDIATELY wash the eye with（）.
A. boric acid solution
B. water
C. baking soda solution
D. ammonia
[单项选择]Which of the routine maintenance procedure listed is required for starting air receivers?（）
A. Frequent draining of accumulated moisture
B. Frequent testing of relief valves
C. A close watch on temperature to prevent fluctuations in pressure
D. Frequent cleaning to re move oil and foreign matter
[单项选择]Which of the routine maintenance procedures listed is required for starting air receivers?（）
A. over-speeding
B. overload
C. low exhaust temperature
D. high crankcase pressure
[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
[单项选择]Routine maintenance on a Central Control Room hermetically sealed air conditioning unit should include （）
A. changing the air filter
B. recharging the system
C. changing compressor lubricant
D. renewing container vacuum
[单项选择]When can routine communications be resumed on a frequency or channel on which 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. 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. Routine communications can resume if，in the Master's opinion，communications on that frequency or channel will not interfere with emergency communications
[单项选择]During the watch keeping at sea, routine adjustments should be （）
A. made and noted as required by the duty engineer
B. reported to chief engineer immediately after being made by duty engineer
C. never made before getting permission from chief engineer
D. made as required but not logged
[单项选择]I（）having your approval for the routine maintenance at your earliest convenience.
A. hope to
B. want to
C. look forward to
D. expect to
[单项选择]Sulfuric acid is a（）.
A. clear syrupy liquid with no odor
B. colorless-to-brown liquid with a choking odor when hot
C. colorless liquid with a pleasant fruity odor
D. whitish liquid with a faint，pleasant odor
[单项选择]These acid residues must be prevented from entering the crankcase, otherwise the lube oil would be（）
A. contaminated
B. emulsified
C. deteriorated
D. oxidated
[单项选择]A package contains nitric acid solution and is radioactive. The radiation level at the package surface is 36 millirems per hour. How should this package be labeled? （）
A. Radioactive II and oxidizer
B. Radioactive II and poison
C. Radioactive I and corrosive
D. Fissile class I
[单项选择]The soda-acid portable extinguishers must be discharged and refilled （）.
A. every six months
B. every year
C. every one and half year
D. every two years
[单项选择]Acid（low pH）中文叫（）
A. 强酸pH＜5
B. 强酸pH＝5
C. 强酸pH＞5
D. 强酸pH＞6
[单项选择]（） neutralizes the acid conditions and（） cleanses the rings and grooves.
A. The detergency；the alkalinity
B. The alkalinity；the detergency
C. The inhabitant；the water
D. The additives；the distilled water
