正确答案: C

小于

题目：串联连接系统的可靠度（）组成该系统各部件的可靠度。

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学习资料的答案和解析：

[单选题]It is important that the water （） very often as this can lead to increased deposits.

not be changed

[单选题]The cylinder covers and the liners are bolted together by means of studs （） the cylinder frames.

screwed into

[单选题]If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe （）.

abnormally high feed water temperature