2021职业技能鉴定海员证书试题解析(01.03)

1. [单选题]The water in an auxiliary boiler should be tested for chloride content to determine ( ).

A. total dissolved solids
B. salt contamination
C. water harcness
D. chlorine contamination

2. [单选题]落水者在水中所穿的湿衣服可使落水者:

A. 增加重量
B. 增加浮力
C. 导致过冷

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