肺动脉瓣区第二音固定分裂（　　）。

[问答题]The following is a transcript of a statement made by a recording industry executive at an industry conference:　　“The music recording industry is suffering grave economic losses due to the widespread piracy of digital music. This fate was an inevitable result of the industry’s misguided decision to switch from the analogue format of vinyl records to the digital formats used today on compact disks and computer files. Copying a vinyl record requires expensive and bulky machinery, whereas anyone with a computer and an Internet connection can start up a music piracy business. To boost music revenues, the recording industry should switch entirely back to the analogue format of vinyl records. Also, I can state with complete authority that music just sounds better on a vinyl record.”　　Discuss how well-reasoned you find this argument. In your discussion, be sure to analyze the line of reasoning and the use of evidence in the argument. For example, you may need to consider what questionable assumptions underlie the thinking and what alternative examples or counterexamples might weaken the conclusion. You can also discuss what sort of evidence would strengthen or refute the argument, what changes in the argument would make it more logically sound, and what, if anything, would help you better evaluate its conclusion.

[单选题]城市隧道工程项目划分是按下列（）排列的。

[单选题]关于败血症描述哪个不正确（　）

[单选题]十进制数101转换成二进制数等于（　　）。

[多选题]作为选择目标市场的模式之一，选择性专业化的缺点有 ( )

[问答题]测头围

[多选题]对于丁的投案行为，下列何种判断是正确的？（　　）[2006年真题]

[单选题]大多数移动通信系统采用（）通信方式。

[单选题]患者，1周前因外伤前牙折断，已经做过根管治疗。检查：冠折，断面在龈上，无叩痛，无松动，牙片显示根充完善，无根折，该牙应在根管治疗后多长时间进行桩冠修复？（　　）

[多选题]营养素是构成食品成分的物质，用来保持人体正常代谢，通常包括哪几类（）

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