问题
选择题
-Mary,why didn't you attend the meeting the other day?
-I ___________,but I forgot. [ ]
A. had
B. would
C. was going to
D. did
答案
答案：C
搜题请搜索小程序“爱下问搜题”
-Mary,why didn't you attend the meeting the other day?
-I ___________,but I forgot. [ ]
A. had
B. would
C. was going to
D. did
答案：C
时，冲击系数取1.8时，则短路电流冲击值为（）。