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问题 单项选择题

下列描述中，不符合BurKtt淋巴瘤的是

A．与8号染色体上c-myc基因的易位有关
B．常发生于颌骨、颅骨、面骨
C．镜下形成满天星图像
D．不可治愈

答案

参考答案：D

单项选择题

以下缩写是指：HPLC（）.

A．气相色谱法 

B．高效液相色谱法 

C．十八烷基硅烷键合硅胶 

D．红外分光光度法 

E．差示扫描量热法
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单项选择题

Password is a(n) (1) series of characters that enables a user (2) a file, computer or program. On multi - user systems, (3) user must enter his or her password (4) the computer will respond to commands. The password helps ensure that unauthorized users do not access the computer. In addition, data files and programs may require a password.

Ideally, the password should be something (5) could guess. In practice, most people choose a password that is easy to remember, such as their name or their initials. This is one reason it is relatively easy to break into most computer system.

5（）

A．everyone

B．everybody

C．nobody

D．most people
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