在Access中,可以一次执行多个操作的数据库对象是______。
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在Access中,表和数据库的关系是_______。
二极管整流电路利用了半导体二极管的()
A. 电流放大特性
B. 电压放大特性
C. 单向导电的特性
D. 反向击穿的特性
When Michael was a little boy, his mother read him numerous stories about pole-vault.
A. 对
B. 错
Michael's training program was carefully monitored by his father.
A. 对
B. 错