处理盲炮可在安全地点用风管吹出盲炮填塞物和炸药,同时应()。
A.不回收雷管
B.回收雷管
C.雷管留在炮孔中
参考答案:B
句型转换。
1. This is my father. (改为一般疑问句)
_____ this _____ father?
2. My basketballs are in the box. (改为否定句)
My basketballs _____ _____ in the box.
3. Mary's pencil is yellow. (对画线部分提问)
_____ _____ is Mary's pencil?
4. I have a big sports collection.(改为一般疑问句)
_____ you _____ a big sports collection?
5. This is a ruler. (改为复数句)
_____ are _____ .
A.用交流电压表测该电源电压时,示数是6V
B.用交流电压表测该电源电压时,示数是6V
C.用此电源给电磁打点计时器供电时,打点的时间间隔为0.01s
D.把标有“6V 3W”的小灯泡接在该电源上时,小灯泡将被烧毁