进程存在的标志是 【6】 。
参考答案:(6) 进程控制块
解析:解析:系统根据PCB感知进程的存在,通过PCB中能包含的各项变量的变化,掌握进程能处的状态以达到控制进程活动的目的。
阅读,完成下面的购物清单。
Miss White: Let's go to the supermarket. What are you going to buy?
Mike: I'm going to buy a new bag.
Sarah: I'm going to buy a violin. I like music. How about you?
Mr. Black: Newspaper. I'm going to buy some newspapers.
1. Mr. Black: some newspapers
2. Mike: ________________________
3. Sarah: ________________________
相对作用强度和毒性均小的局麻药是()
A.普鲁卡因
B.利多卡因
C.丁卡因
D.布比卡因
E.以上都不对