假设当前计算机并发系统中有一个用户进程，它的工作流程如下图所示，再假设系统只有三个基本状态，用户进程具有最高优先级，采用不可抢先时间片轮转调度算法，时间片为20ms，其它进程不用磁盘及其它10设备。则该进程运行完成所需时间是()。
A. 85ms
B. 140ms
C. 105ms
D. 110ms
What did scientists find BIRR4 could do？
A. It could change the cold cycle.
B. It could strengthen the immune system.
C. It could only treat a cold in the first stages.
D. It could eliminate all possibilities of getting a cold.
The main purpose of the passage is to ______.
A. criticize John Kerry for his personality
B. explain why John Kerry was defeated
C. describe the Democrats' reaction to the defeat
D. encourage the Democrats to overcome their depression
【B1】
A. Father's Day
B. Mother's Day
C. Teacher's Day
微信支付 
支付宝支付