短路电流的基本概念?
参考答案:
电力系统在运行中,相与相之间或相与地(或中性线)之间发生非正常连接(即短路)时流过的电流。
对于投资者尤其是机构投资者来说,()是他们避险套利的重要工具。
A.国债基金
B.债券基金
C.货币市场基金
D.指数基金
There was a big sea bird that was very beautiful. One day, the sea bird (1) to a country and stayed outside of a palace. The Emperor asked his men to bring it to the palace. Then he said," As a (2) for the sea bird, we’ll set up the band and get the best food and wine ready for it. "(3) they played the best music for the sea bird, but it looked (4) . The Emperor introduced the most delicious food and best wine and asked the bird to have them. But the sea bird (5) After three days without eating or drinking, the sea bird (6) .The Emperor said (7) , "Why didn’t you eat I gave you all of the (8) !"The story tells us that what some people believe to be the best music and the best food aren’t so for (9) . Feed a bird according to a bird’s wants, not a person’s. The (10) "Do to others as you would have others do to you. " is never really suitable or right.
第(2)空应选择()
A.welcome
B.meeting
C.host
D.guest