An oxygen indicator will detect （）.

Athe amount of oxygen in a space
Bthe presence of harmful amounts of carbon monoxide
Cconcentrations of explosive gas
DAll of the above

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参考解析：

分类：船舶电气与船舶安全题库

An indicator on the main switchboard should show （） the emergency battery is in service or not.AthatBwhenCifDwhether

2、An orange and white buoy indicating a

An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol? （）AOpen-faced diamondBDiamond with a crossCCircleDSquare

3、An indication of an overloaded main pr

An indication of an overloaded main propulsion diesel engine is （）Awhite smoke in the exhaustBhigh exhaust gas pyrometer readingsCsparks in the exhaustDblue smoke in the exhaust

4、（）is an indication that the weather is

（）is an indication that the weather is about to clear.ARising cloudsBLowering cloudsCThickening cloudsDScattering cloud

5、After each reading of an oxygen indica

After each reading of an oxygen indicator, the instrument should be purged with（）.ACO2Bfresh airCthe tested compartment's airDwater

6、Which shipboard equipment will detect

Which shipboard equipment will detect a signal from a SART?（）AS-Band RadarBA DSC receiverCX-Band RadarDThe autoalarm

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