室外配电箱应牢固地安装在支架或基础上，箱底距地面高度不低于（），并采取防止攀登的措施。
A.1.0m
B.1.5m
C.2.0m
D.1.8m
参考答案：A
______ makes the people who find value in hardships different is that they are able to combine what happened with the story of their own life.
A．It
B．What
C．That
D．Which
（）是石松植物门特有的
