进入标准养护室的试件应根据编号、龄期，按顺序连续摆放进行养护。( )
参考答案：对
Only when I got here _________ that I had made a big mistake.
A．did I realize
B．I realized
C．I have realized
D．have I realized
事务通过执行LOCK-S(Q)指令来申请数据项Q上的______锁。
