依据CRH1A（时速250公里）型动车组二级（专项）修检修计划，外门检查属于（）类专项修。
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Which of the following statements represents the correct action to take when three crew members discover a fire?（）
A. One man report the fire, and the other two men fight the fire
B. One man report the fire, one man fight the fire, and one man evacuate and secure the area
C. One man report the fire, one man fight the fire, and one man act as a safety observer
D. All three men fight the fire and report it immediately after it is extinguished
有机磷农药中毒可见（）
A. 呼吸抑制
B. 呼吸有蒜味
C. 呼吸有烂苹果味
D. 呼吸有苦杏仁味
E. 呼吸有氨味
水的硬度是（）
A. 钠、镁等盐类的总量
B. 钙、镁等离子的总量
C. 钙、镁的硫酸盐和氯化物
D. 钙、镁的重碳酸盐和碳酸盐
E. 所有阳离子的总量
站用交流电源系统竣工（预）验收（站用交流电源柜）标准卡中，对站用交流电源柜竣工（预）验收屏柜安装有哪些验收内容？
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