安全系统由限速器、_,_、超速保护装置、供电断错相保护装置、层门和轿门联锁等装置组成
参考答案:安全钳,缓冲器端站保护装置
根据句意,在相应的横线上,写出括号内所给单词的适当形式。
小题1:An advantage of using the solar energy is that it won’t create any (pollute).
小题2:Our headmaster is the (strict) with us among the teachers who teach us.
小题3:What an (enjoy) journey they had the day before yesterday!
小题4:Those volunteers always think more of others than of (they).
硬膜外麻醉用于老年人,下面哪项是错误的()
A.应用镇静、镇痛药应小心
B.局麻药需要量减少
C.穿刺操作可能出现困难
D.胸段以上麻醉对病人影响不大
E.易发生血压下降