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问题 单项选择题

下列哪项骨软骨瘤的临床表现是错误的()

A．好发于青少年

B．多见于干骺端

C．生长年龄结束后，肿瘤不停止生长

D．1%的病人可恶变

E．单发性骨软骨瘤比多发性骨软骨瘤的恶变机会少

答案

参考答案：C

单项选择题

Communication via e-mail is by far the most common Internet activity. You can (71 ) with anyone in the world who has an Internet address or e-mail (72) with a system connection to the Internet. All you need is (73) the Internet and an e-mail program. Two of the most widely used e-mail programs are Microsoft’s (74) and Netscape’s Navigator. A typical e-mall message has three basic (75) : header, message, and signature.

（75）处填（）。

A. packets

B. elements

C. frames

D. cells
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判断题

共同违反治安管理的，根据违反治安管理行为人在违反治安管理行为中所起的作用，分别处罚。( )
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