搜题请搜索小程序“爱下问搜题”
问题
判断题
在整定过电流继电器时，只要依据Ｉｚ＝ＩＱＥ＋ΣＩｅ即可。（）
答案
参考答案：对
选择题
While _____ the dog, you were careless and it got loose and was hit by a car.
A. walking
B. were walking
C. walked
D. to walk
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单项选择题
混凝土的强度达到()之前，不得在其上践踏或安装模板。
A.0.8MPA
B.1.2MPA
C.1.5MPA
D.1.8MPA
查看答案
