将三相绕组的尾端连在一起，从始端分别引出导线，这就是（）连接。
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一个三相电源发出的总有功功率等于每相电源发出的有功功率之（）。
（）使用广乏，可用作缆绳的临时眼环，还可用于绳和绳、绳和眼环的连接。
A. 单套结
B. 双套结
C. 大绳接结
D. 缩绳结
根据监管规定，商业银行可以采用权重法或者内部评级法计量信用风险加权资产。
A. 正确
B. 错误
On a cisco aironet 802.11 a/b/g wireless lan client adapter， the status led and activity led are alternating on and off. What does this indicate？（）
A. the client card is not associated to the network.
B. the client card has awakened from power-save mode.
C. the driver has been installed incorrectly.
D. the client card has failed.
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