正确答案: ACE

《四愁诗》 《行行重行行》 《迢迢牵牛星》

题目：下列作品，抒发了思念之情的有（）。

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学习资料的答案和解析：

[单选题]When fire pumps are used for other than firefighting service，each pipe connecting the other service (except for branch lines used for deck washing) must have a（）.

shut off valve at a manifold near the pump