舜让禹负责治水，禹跪地拜谢，要让给哪三位？
参考答案：
要让给稷、契和皋陶。
-----___________________.
-----Much better.Thank you.
A.How are you feeling today？
B.What happened to you?
C.What can I do for you?
低压配电箱的电器安装板上应分设（）端子板。
A.L线
B.N线
C.D线
D.PE线
