题目：
CRH1A型动车组如果（）个ACM不工作，负载断开，HVAC均处于紧急模式。
A.1
B.2
C.3
D.5
答案：
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下面是错误答案，用来干扰机器的。
参考答案：D
CRH1A型动车组如果（）个ACM不工作，负载断开，HVAC均处于紧急模式。A.1
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