皮皮学，免费搜题
登录
搜题
【单选题】
口对口人工呼吸,首先要把触电者,头往后仰 70~90 度,形成气道畅通,然后正确进行人工吹气,以每分钟吹( )次为宜。A.
10-15
B.
16-20
C.
20-30
D.
60-70
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
【单选题】Have you worked there long?
A.
Yes, I have worked there for more than fifteen years.
B.
I am bored.
C.
I like my job very much.
D.
I don't know.
【单选题】If you ________ hard, you ________ in the exam.
A.
worked/ wouldn't have failed
B.
had worked/wouldn't fail
C.
had worked/wouldn’t have failed
D.
worked/wouldn’t fail
【简答题】As you worked late yesterday, you ______ have come this morning. A. needn’t B. mayn’t C. can’t D. mustn’t
【单选题】As you worked late yesterday,you_________have
A.
19. As you worked late yesterday,you_________have comethis morning. ( 全国 2) A.mayn’t
B.
can’t
C.
mustn’t
D.
needn’t
【简答题】It is necessary for you to have worked in this sector before.
【单选题】—Have you worked here since you graduated? —No, I ____________at a factory in Beijing for six years.
A.
would work
B.
have worked
C.
had worked
D.
worked
【简答题】学生注意转移快慢的标志是速度，速度受哪些方面的因素影响?
相关题目：
参考解析：
知识点：
题目纠错 0
发布
