【单选题】Isn't it time you got down to ______ thepapers
A.
26. Isn't it time you got down to ______ thepapers? (重庆) A.mark
【简答题】(46)事务的所有操作在数据库中要么全部正确反映出来,要么全部不反映,这是事务的哪一个特性? A)持久性 B)原子性 C)隔离性 D)一致性
【单选题】用图像编辑软件可以对图像进行各种编辑,下列各选项中说法不正确的是( )。
【单选题】听力原文:W: Didn't you hear me come in? You really have an unusual power of focusing your attention. M: Are you talking to me? Q: What can be inferred from this conversation about the man? (15)
A.
He's amazed that the woman didn't hear him.
B.
He wasn't paying any attention to her.
C.
He prefers not to be talked to.
D.
He thinks the woman is making too much noise.
【单选题】下列说法错误的是( )。
A.
导线截面积主要根据工作电流 但对一些较小的电器,为保证有一定的机械强度,导
D.
在插接器的识别中,其符号涂黑的表示插座,白色的表示插头