批处理操作系统的主要缺点是
A．系统吞吐量小
B．用户不能直接控制其作业的执行
C．不具备并发性
D．系统资源利用率不高
参考答案：C
—The coffee is good. ________?
—Certainly. I am very glad you love it. [ ]
A. Could I have another cup
B. What about something else
C. Why not have a taste
D. Where did you buy it
拍卖人可否可以在自己组织的拍卖活动中拍卖自己的物品或者财产权利？
