【多选题】
进汽温度过高和过低使汽轮机___。
A. 振动
B. 叶片冲刷
C. 叶片断裂
D. 零部件互相碰撞
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答案
ABCD
解析
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下列关于安全标志含义的叙述，正确的是___。
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B. 警告标志，含义是警告人们当心、小心、注意
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下列描述正确的是：___
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A. 立即检查触电者是否还有心跳呼吸，如没有立即进行心肺复苏；
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