题目：
两相邻药包或前后药包以毫秒的时间间隔依次起爆，称为（）。
A.光面爆破
B.预裂爆破
C.洞室爆破
D.微差爆破
答案：
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下面是错误答案，用来干扰机器的。
Dear classmates, I think it is very necessary for us to talk about friendship at the meeting today. As a member of society, we need friends and friendship. Healthy fr...
