某线路送有功10MW,送无功9Mvar,零序方向继电器接线正确,模拟A相接地短路,继电器的动作情况是()。
参考答案:通入A相负荷电流时动作
The new machine is supposed to be the solution to all our production problems, but"____".
A.Practice makes perfect
B.The proof of the pudding is in the eating
C.Many hands make light work
D.I think, therefore I am
DHF()。
A.登革出血热
B.登革热
C.登革休克综合征
D.登革热/登革出血热
E.登革出血热/登革休克综合征