题目内容

长期鼻饲者应每天进行口腔护理()次,并定期更换胃管,普通胃管()更换一次,硅胶胃管()更换一次,

查看答案
更多问题

码元同步也可以用外同步和自同步法实现

A. 对
B. 错

在二进制系统中,码元同步也叫位同步,因为一个码元就是代表一个二进制位

A. 对
B. 错

This letter is for a / an ____.

A. best friend
B. classmate in college
C. online friend
D. family member

When did the auther meet his / her friend?

A. 16 years ago.
B. 17 years ago.
C. 18 years ago.
D. 19 years ago.

答案查题题库