皮皮学，免费搜题
登录
搜题
【单选题】
诊断慢支的标准是A.
有咳嗽、咳痰症状,经内科治疗迁延不愈者
B.
有咳嗽、咳痰症状,每年发病2个月连续3年
C.
有咳嗽、咳痰伴喘息症状,每年发病持续3个月,连续1年
D.
有咳嗽、咳痰症状,每年发病3个月,连续3年,除外其他心、肺疾患
E.
有咳嗽、咳痰或伴喘息症状,每年发病持续3个月,连续2年,并除外其他心肺疾患
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】NaOH(C 1 )+NH 3 (C 2 )水溶液中的质子条件式______。
【简答题】写出下列溶液的质子条件式。 ①浓度为c mol.l-1(NH4)2HPO4；②浓度为c mol.L-1NaNO3
【单选题】Online distance learning (网上远程教育) is an instructional system which connects learners with educational resources. Students work on their own at home, at work, or at school and communicate with faculty ...
A.
It has more disadvantages than advantages.
B.
It is a learning form. based on internet.
C.
It is not available for some students.
D.
It has only enrichment classes.
【单选题】The appearance of distance learning produces a big effect on the society and leads to the revolution of a whole age.
A.
Y
B.
N
C.
NG
【单选题】By making learning possible anytime and anywhere, distance education is a powerful tool _________ supporting lifelong learning.
A.
to
B.
for
C.
with
【单选题】Sometimes online distance learning can be a problem because ______.
A.
it is not as interesting as face-to-face learning
B.
the learners only have the written text
C.
some students don't know how to organize their time
D.
some learners don't need face-to-face cues
【单选题】Sometimes online distance learning can be a problem because _________ .
A.
learners can’t afford it
B.
learners get too many hints
C.
it involves excessive writing
D.
it is not available at the weekend
【简答题】According to the passage , distance learning is baBy almost any measure , there is a boom in Internet-based instruction . In just a few years , 34 percent of American universities have begun offering ...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
