计算机系统中发生某个事件时,CPU暂停正在执行的程序,转去执行相应的程序,执行完后再返回原先程序继点继续执行的过程,称为 【12】 。
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如果某事务成功完成执行,则该事务称为 【11】 事务。
对AMY有激活作用的离子是()。
A. Mg2+
B. Cl-
C. Fe2+
D. Cu2+
E. PO42-
我国彝族所使用的老彝文是梵文拼音文字。
A. 对
B. 错
W: I want to register for this mathematics course.M: I’m sorry registration has dosed.W: Closed The clerk told me I could come back and register any time during the first week of classes.M: Well. that’s not possible The computer’s official student account has already been sent to the state, And that’s what our budget is based on. Who told you that anywayW: Some woman here when I tried to register three weeks ago. She said I just had to pay a late fee.M: She must have been a temporary worker. They don’t have much training. Why didn’t you register thenW: She said I couldn’t until I had my birth certificate Here it is.M: You birth certificateW: Well. I’m a new part-time student. So she asks for identification. I don’t drive so I don’t have a driver’s license.M: Huh. That’s no reason to demand a birth certificate. We only need to establish residency: a phone bill with your name and address on it would’ve been fineW: Really Only prove of my addressM: Yes. I’m afraid she gave you the wrong information. Still you’ll have to wait and take your math’s class next semester.W: But that’s not fair.M: Well, I sympathize with your problem, but frankly, I don’t think there is anything anyone can do for you. You were trapped in the system. If you want to, you can talk to the director. She will help you if she can.W: Great.M: Don’t get your hopes up. What does the man imply when he tells the woman "Don’t get your hopes up"()
A. The director probably isn’t able to make an exception.
B. The director probably won’t see her.
C. The director usually isn’t very helpful
D. Part-time students aren’t the director’s responsibility.