题目内容

心前区疼痛最常见的病因是:

A. 肺心病
B. 冠心病
C. 风心病
D. 高血压病
E. 心肌炎

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心源性晕厥最具特征性的表现是 :

A. 短暂意识丧失
B. 头晕
C. 眩晕
D. 休克
E. 黑曚

The key protocol for most of today’s computer networks is ().

A. TCP/IP
B. Windows
C. handshaking
D. FTP

Every device on the Internet has an assigned () such as 128.110.192.40.

A. MAC address
B. Protocol
C. IP address
D. domain name

In the Web address “www.qq.com”, “qq.com” is called ().

A. MAC address
B. Protocol
C. IP address
D. domain name