岩体稳定性是指岩体在工程施工和运营期间不发生()和()的特性。
参考答案:形变;破坏
To the joy of everyone here, the famous movie star was _____ mayor of the city.
A.adopted
B.appointed
C.named after
D.in the name of
为了消除过电压的影响而设的接地叫做()。
A、工作接地
B、保护接地
C、防雷接地
D、过电压保护接地