端口可独立地划分到不同的网段，可以同时用于几个不同的网络服务器的集线器是( )。A

阅读下面材料，在空白处填入一个适当的内容（不多于3个单词）或括号内单词的正确形式。

Alan: So, what do you want to do tomorrow?

Emily: Well, let’s look at this city guide here. Uh, here’s something    小题1:   (interest). Why don’t we first visit the Art Museum in the morning?

Alan: Okay. I like that idea. Where shall we go    小题2:  lunch?

Emily: How about    小题3:  (go) to an Indian restaurant? The guide recommends    小题4:   not far from the museum.

Alan: That sounds great. After that, what do you think about visiting the zoo? Well, it says there are some unique animals not    小题5:   (find) anywhere else.

Emily: Well, to tell the    小题6:   (true), I’m not really interested in going there. Why don’t we go shopping? There are supposed to be some really nice places    小题7:    we can pick up some bargains.

Alan: Nah, I don’t think that’s a good idea. We only have a few traveler’s checks left. And I only have fifty dollars left in cash to pay.

Emily: Don’t worry. We can use your credit card to pay.

Alan: Oh, no. I remember the last time you    小题8:   (use) my credit card for your new clothes.

Emily: Oh well, let’s take the subway down to the seashore    小题9:   walk along the beach.

Alan: I couldn’t agree    小题10:  . It sounds like a wonderful plan.

检验批合格质量应具有完整的施工操作依据、质量检查记录。

电机车架空线悬吊绝缘子距电机车架空线的距离，每侧不得超过（）。

A、0.15m

B、0.20m

C、0.25m

如图是A、B两固体物质的溶解度曲线，在t₁℃时，将25gA物质和25gB物质分别加到各盛有50g水的甲、乙两烧杯中，充分溶解（不考虑溶剂的挥发），则下列说法中，错误的是   

A．t₂℃时，A、B两物质的饱和溶液的溶质质量分数相同

B．若A物质中混有少量B物质，可用降温结晶的方法提纯A

C．由t₁℃升温到t₂℃，甲烧杯中A物质溶液中溶质质量分数不变

D．由t₁℃升温到t₂℃，乙烧杯中B物质溶液中溶质质量分数不变

光纤的连接方法主要有永久性连接、（）和活动连接。