皮皮学，免费搜题
登录
搜题
【单选题】
根的顶端分生组织,故又名生长锥,也称为生长点,通常情况下其长度为:A.
1~3mm
B.
5~8mm
C.
05~1mm
D.
100-200nm
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】Diaphragm valves use a flexible and to regulate flow. The handwheel operates just like the handwheel on valve. The is attached to a device called the . The compressor pushes on a flexible diaphragm. T...
【简答题】The party( )very well, thanks.
【多选题】关于阿司咪唑的描述正确的是
A.
为丙胺类H1受体拮抗剂
B.
在体内经代谢转化为活性药物
C.
对中枢神经系统渗透性很差，无嗜睡作用
D.
长效抗过敏药
E.
无局部麻醉作用和抗胆碱作用
【判断题】Generally pressure drop across the body of the nonweir diaphragm valves is larger than that of weir diaphragm valves.
A.
正确
B.
错误
【单选题】-- Well, thanks very much. -- _________.
A.
My pleasure
B.
No thanks
C.
It doesn't matter
【判断题】Diaphragm valves are mechanical valves that prevent reverse flow in piping
A.
正确
B.
错误
【单选题】Well, thanks very much for_________ my talk. Are there any questions?
A.
listening to
B.
looking at
C.
hearing to
相关题目：
参考解析：
知识点：
题目纠错 0
发布
