在砂卵石地层中，每个槽孔的施工通常采用先钻主孔，后劈打副孔的方法。这种成槽方法是( )。
A. 射水造槽孔法
B. 抓斗开挖槽孔法
C. 冲击钻造槽孔法
D. 回转钻造槽孔法
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Which of the followings is not CORRECT （）.
A secretary needs to take care of all different things through the whole process of a meeting.
B. A secretary should implement many of the decision reached at the meeting.
C. All a secretary should do during a meeting is to listen attentively.
D. A secretary should type the minutes up after the meeting.
注册税务师以纳税人、扣缴义务名义向税务机关办理开业税务登记，应自领取营业执照之日起( )日内申报登记。
A. 10
B. 15
C. 30
D. 60
水利水电建设中，爆破技术中的( )广泛用于基坑、渠道、隧洞的开挖和采石场作业等。
A. 浅孔爆破法
B. 深孔爆破法
C. 洞室爆破法
D. 预裂爆破法
Were you able to recover your stolen laptop（）
A. get back
B. reach back
C. go back
D. come back
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