安全防护装置又称安全附件，目前常用的有压力表、（）、液面计、安全阀、爆破片。
参考答案：温度计
__________ that has caused the trouble and ________ that we should scold(批评).
A．It was him; it was he
B．It is he; it is him
C．This was he; that is him
D．That is him; that was he
我国自1988年1月1日起开始采用（）作为高程起算的统一基准。
A.1985国家高程基准
B.废黄河高程系
C.冻结吴淞高程系
D.56黄海高程基准
