BTS3012基站最大输出功率为()。A、20W,43dBm B、40W,46dBmC

题型:单项选择题

问题:

BTS3012基站最大输出功率为()。

A、20W,43dBm

B、40W,46dBm

C、60W,47.8dBm

D、100W,48.5dBm

考点:传输设备华为主设备知识华为主设备知识题库
题型:单项选择题

下列选项,不属于政府预算职能的有()。

A.控制政府部门支出

B.稳定物价水平

C.平衡国际收支

D.监督政府部门收支运作情况

E.实现充分就业

题型:单项选择题

牙釉质表面主要的无机物为()

A.铁和锌

B.钙和磷

C.镁和钠

D.氟和氯

E.碳和磷酸钙矿物质

题型:单项选择题

按被保险人的年龄分类,人身保险的种类包括( )。

A.老年保险和成人保险

B.健体保险和标体保险

C.儿童保险和成人保险

D.社会保险和商业保险

题型:单项选择题

How to protect children Web fans from unsuitable material on-line while encouraging them to use the Internet has long been discussed in the US.

For some parents, the Internet can seem like a jungle, filled with danger for their children. But jungles contain wonders as well as dangers and with good guides, some education, and a few precautions, the wilds of the Internet can be safely navigated. "Kids have to be on-line. If we tell our kids they can’t have access to the Internet, we’re cutting them off from their future, " said an expert.

Most kids have started to use search engines. Many of them are great for finding tons of interesting Internet sites, and they can also locate places where you might not want your kids to go. There are search engines designed just for kids. A certain software contains only sites that have been selected as safe. The most popular way to limit access would be to use what is known as a "content screener". But this can’t be wholly reliable, and the best thing parents can do is to talk to their kids and let them know what is OK or not OK to see or do on the Internet. Another way is that mum or dad is nearby when the child is surfing the Internet.

A few other tips

·Don’t put the PC in a child’s room but keep it in an area where mum or dad can keep an eye on things. That also makes the Internet more of a family activity.

·Ask your child what he or she has been doing and about any friends they make on-line.

·Tell your child not to give on-line strangers personal information, especially like address and phone number.

·And tell your children never to talk to anyone they meet on-line over the phone, send them anything, accept anything from them or agree to meet with them unless you go along.

The passage is mainly about the subject of()

A. American children going on-line

B. Internet in America

C. appreciating Internet

D. opposing children’s on-line

题型:单项选择题

企业工会组织合并、撤销,其工会经费应如何处置?

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