对于既有FDD，又有TDD、GSM的覆盖区域，不同无线接入技术之间的信号强度无法直接

高频变压器中，环形磁心的漏磁小，体积大。

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.

According to the passage, we can infer that（）

A. soft wares fit for children want programming

B. a child who is on-line is in danger

C. Internet is a jungle full of danger

D. Internet contains a lot of harmful sites

9个月女孩。因突发高热39.8℃，抽搐一次而来急诊。查体：神清，精神可，身上有少许皮疹，前囟平。咽部充血，扁桃体Ⅱ度肿大，心、肺、腹（-），无病理反射。

入院后8小时，体温上升到40℃，又发生惊厥，在抢救措施中，下列哪一项暂时不需要（）

A.保持呼吸道通畅

B.气管插管

C.吸氧

D.肌注或静注安定

E.采取降温措施

患者，女性，因恶心、呕吐、厌食而来就诊。初步检查结果为：ALT增高，肝大，肝区痛，黄疸。临床怀疑为乙型肝炎。

在乙型肝炎两对半检测中，下列哪项结果传染性最强（）

A.HBsAg（－），抗HBs（－），HBeAg（－），抗HBe（-），抗HBc（-）

B.HBsAg（+）.抗HBs（－），HBeAg（－），抗HBe（-），抗HBc（+）

C.HBsAg（+），抗HBs（－），HBeAg（－），抗HBe（+），抗HBc（+）

D.HBsAg（－），抗HBs（－），HBeAg（一），抗HBe（－），抗HBc（+）

E.HBsAg（+），抗HBs（－），HBeAg（+），抗HBe（-），抗HBc（+）

氯胺酮的药理作用，下述正确的是（）

A.兼有镇静，镇痛和麻醉三重作用

B.对心血管的影响主要是直接兴奋中枢交感神经系统

C.对呼吸影响轻微，偶尔短暂的呼吸抑制

D.可使骨骼肌张力增加

E.能增加脑血流，脑代谢