皮皮学，免费搜题
登录
搜题
【单选题】
特殊情况下,超声雾化器需连续使用时,中间须间歇:( )A.
3h
B.
2h
C.
30min
D.
lh
E.
20min
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】关于关键线路，说法错误的是()
A.
在所有线路中，总作业时间最长的线路是关键线路
B.
关键线路上的工序如有任何延长，整个任务就会受到影响而延迟
C.
关键线路上一定不含虚活动
D.
关键线路也叫主要矛盾线
【单选题】听力原文：M: How long will it take to mail this letter to London? W: About two weeks. Q: What Call we learn from the dialogue? (25)
A.
The man will mail a letter from London.
B.
The woman works in a post office.
C.
The man is a traveler.
【单选题】S1: How long does it take to change the engines from ahead to astern? S2: It takes 30 seconds to change the engines from ahead to astern. Q: How long will it take to change the engines from ahead to a...
A.
30 seconds
B.
13 seconds
C.
Half an hour
D.
Half a second
【简答题】S1:How long does it take to change the engines from ahead to astern?S2:It takes 30 seconds to change the engines from ahead to stern.Q:How long will it take to change the engines from ahead to aster...
【简答题】Q: How long will it take me to get there? A:_______
【单选题】Q: How long will it take for them to arrive at the pilot station?
A.
About one hour.
B.
Half an hour.
C.
One and half hours .
D.
Not mentioned.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
