利用电磁原理或机械动作原理来延时触点的闭合或断开的继电器是( )。
A．热继电器 B．时间继电器 C．中间继电器 D．中流继电器
参考答案：B
________ ，Mom had a cup of coffee and a few minutes’ rest．
A．With her housework done
B．With her housework being done
C．With her housework doing
D．With her housework to do
男性，不慎从二楼坠落，致骨盆骨折及左股骨下段开放性骨折，创口大量出血，首先抢救（）。
A.输液
B.止血
C.骨折复位
D.骨折临时固定
E.止痛
