从实践来看，我国经济体制改革经历了一条从农村到城市，从微观到宏观，从非国有经济到国有

关于网络操作系统基本功能的描述中，正确的是______。

A．文件服务器以集中方式管理共享文件，不限制用户权限

B．打印服务通常采用排队策略安排打印服务，用户先到先服务

C．通信服务提供用户与服务器的联系，而不保证用户间的通信

D．客户端和服务器端软件没有区别，可以互换

补全对话。

David: Oh, the fridge is empty, so we have to go out for 1______ tonight.

Susan: What 2______ the French restaurant on Broadway Street?

David: Oh, no. Maybe it's the best in town, but it's too 3______. Let's go to a cheaper one.

Susan: There's a new restaurant called Tortilla Flat.

David: Where is it?

Susan: It's on Hope Street, just 4______ to the post office.

David: We'd better hurry. It's already 7 pm, and most restaurants stop serving food by 9 pm.

Susan: Don't worry. We can 5______ the restaurant in 5 minutes.

某企业的应收账款周转期为80天，应付账款的平均付款天数为40天，平均存货期限为70天，则该企业的现金周转期为（）

A、190天

B、110天

C、50天

D、30天

明法审令

简述比较检验。