在330kV及以上电压等级线路的杆塔上进行工作时，应穿导电鞋。
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某女。25岁。每遇情志不舒，便腹痛欲泻，泻后痛减。多因（）
A. 大肠湿热
B. 伤食积滞
C. 肝郁脾虚
D. 脾胃气虚
E. 湿困脾胃
A pumproom is suspected of accumulating gases after a ventilation machinery breakdown. Where should the combustible gas indicator case be placed when testing the pumproom atmosphere for combustible gases? （）
A. In the lower level of the pumproom
B. In the middle level of the pumproom
C. In the upper level of the pumproom
D. On the deck outside the pumproom
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