正确答案: C

给水

题目：在锅炉_________系统中可能设有盐度计。

解析：C

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学习资料的答案和解析：

[单选题]舱内装散装粮食，又未进行通风而发生火灾属于()

自热自燃

[单选题]柴油机启动系统中主启动阀位于( )。

启动控制阀与空气分配器之间

[单选题]船舶由深水进入浅水区，发生的现象，下述( )正确。

船速下降，航向稳定性提高

[单选题]可作骨折代夹板的物品有( )

木板，硬纸板

[单选题]所有梯道、走廊和起居处所内脱险通道要求的感烟探测器应在烟密度超过______每米减光率之前动作。但在烟密度超过_____每米减光率之前不应动作。

12.5％/2％

[单选题]第三组：The sewage treatment system must be capable of discharging an effluent that comes within the limits of the tests. Sewage can be treated biologically so that it may be discharged with minimal damage to ecosystem. Biological treatment involves the use of living organisms to treat the sewage within the sewage treatment plant so the liquids and sludge discharged are within the standards specified.

biological sewage treatment system

[单选题]Which information is not given in the text?

An international convention on ship recycling has been adopted

[单选题]男性淋病患者尿道口表现为红肿并可见有______分泌物溢出。

脓性

[单选题]在船舯处，由吃水线量至干舷甲板上缘的垂直距离称：()

干舷