隔离开关的操作控制回路受断路器和接地刀闸辅助触点控制,只有()的情况下,才可能对隔离开关进行操作。
A. 断路器分闸,接地刀闸拉开
B. 断路器合闸,接地刀闸拉开
C. 断路器分闸,接地刀闸闭合
D. 断路器合闸,接地刀闸闭合
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3个月婴儿稀水便2天,每天约10余次伴呕吐尿少,前囟凹陷,精神萎靡,呼吸深快,口唇樱红。该患儿应考虑腹泻伴有()。
A. 休克
B. 酸中毒
C. 中毒性脑病
D. 低钾血症
E. 低钙血症
色心形成的颜色具有以下的哪些性质?()
A. 颜色较浅
B. 加热漂白
C. 都有特征谱线
D. 须经辐照呈色
The temperature of the fuel oil received during bunkering operations is critical in determining the()
A. expansion space to leave in a tank
B. flash point at which the fuel will burn
C. temperature to which the fuel must be heated
D. rate at which the fuel can be pumped during transfer operatio