处理安全事故的“四不放过”原则是：（）、（）、（）、（）。
纳税人办理增值税发票税控系统专用设备初始发行涉税事项时，需要报送的资料是（）
A. 税务登记证副本及复印件
B. 经办人身份证明及复印件
C. 《发票领用簿》
D. 《最高开票限额申请表》
E. 对增值税发票税控系统最高开票限额审批的《准予税务行政许可决定书》
免疫活性细胞是指特异性免疫应答的细胞，_________执行细胞免疫，_______执行体液免疫。
Examine the following command: SQL> ALTER TABLE booking SHRINK SPACE COMPACT; Which activity is performed when the preceding command is executed?（）
A. The shrink operation touches every block in the BOOKING table
B. The high-water mark (HWM) for the BOOKING table is shifted from its original position
C. The progress of the shrink operation is saved in the bitmap blocks of the BOOKING table
D. The data manipulation language (DML) triggers on the BOOKING table are executed because the shrink operation is internally handled by the INSERT/DELETE operatio
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