在传染病的预防工作中，国家实行的制度是（）
A.爱国卫生运动
B.有计划的卫生防疫
C.预防保健
D.有计划的预防接种
E.以上都不是
参考答案：D
Fortunately it was near the place ____ there was a bomb ____ we found the soldier alive.
A．that; where
B．where; in which
C．where; that
D．that; in which
凿岩规定使用的气压为——MPa（）。
A.O.5MPa
B./MPa
C.O.2Pa
D.2Mpa
