电磁阀广泛应用于化工装置的联锁保护系统。（）_爱下问搜题

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问题判断题

电磁阀广泛应用于化工装置的联锁保护系统。（）

答案

参考答案：对

选择题

The room was almost empty_______ there were some old chairs with their legs broken.[ ]

A. except for

B. except that

C. besides

D. except

填空题

Fe-Cr表示（）铁。