问题
单项选择题
进程的3个基本状态为执行状态、就绪状态和阻塞状态，从执行状态到就绪状态是由（）引起的。
A.进程请求I/O操作
B.进程调度
C.时间片到
D.P操作
答案
参考答案：C
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进程的3个基本状态为执行状态、就绪状态和阻塞状态，从执行状态到就绪状态是由（）引起的。
A.进程请求I/O操作
B.进程调度
C.时间片到
D.P操作
参考答案：C
| 完形填空。 |
| A man was walking along the street when he saw a woman struggle (奋力) with a large box. It was half in and half 1 of her car. He was a helpful kind of man, so he went up to the woman and said, "Let me give you a hand with that box. It looks very 2 ." "That's very kind of you," the woman said. "I'm having a lot of 3 with it. I think it's stuck (卡住)." "Together we'll soon move it," the man said. He 4 into the back seat of the car and took hold of the other end of the box. He said, "I'm ready." And he began to 5 hard. For several minutes the man and the woman struggled with the box. Soon they were 6 in the face. "Let's rest for a minute," the man said. "I'm sorry, but it 7 stuck." A few minutes later, the man said, "Let's try again. Are you ready?" 8 of them took hold of the box again. "One, two, three!" the man said, and they went on with their struggle. At last, when they were very tired, the man said, "You are 9 . It really is stuck. I don't think there's 10 we can get it out of the car." "Get it out of the car!" The woman cried. "I'm trying to get it in!" |
| ( )1. A. in ( )2. A. heavy ( )3. A. trouble ( )4. A. got ( )5. A. pull ( )6. A. white ( )7. A. goes ( )8. A. Every ( )9. A. ready ( )10. A. anything | B. out B. strong B. questions B. stepped B. carry B. tired B. falls B. All B. right B. anywhere | C. on C. dear C. matter C. came C. push C. red C. grows C. Either C. clever C. any one | D. off D. new D. accidents D. walked D. lift D. hurt D. seems D. Both D. sure D. any way |