炮眼深度小于（）时，不得装药、爆破。A．0．4m B．0．5m C．0

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问题单项选择题

炮眼深度小于（）时，不得装药、爆破。

A．0．4m

B．0．5m

C．0．6m

D．0．8m

答案

参考答案：C

名词解释

民俗礼仪

单项选择题

Which of the following makes the most appropriate title for the passage

A．Cold-War Policies and the Tourism Industry

B．The Characteristics of Political Tourism

C．The Rise of Political Tourism

D．The Latest Developments of Political Tourism