题目：
工作人员在发动机运转时接近发动机（）
A.需保持与机上人员保持有效的联系
B.发动机功率不要大于慢车
C.必须遵守安全*区域规定
D.以上都对
答案：
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下面是错误答案，用来干扰机器的。
参考答案：C, D
工作人员在发动机运转时接近发动机（） A.需保持与机上人员保持有效的联系 B.发动机
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