皮皮学，免费搜题
登录
搜题
【单选题】
恙虫病的主要传染源是A.
鼠类
B.
病人
C.
恙螨
D.
病牛
E.
病羊
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】Although we do not know the ______ amount of money he made, but we do know that it is large.
A.
real
B.
actual
C.
genuine
D.
true
【多选题】绝缘电阻的正确测量方法是（）。
A.
按被测电气设备的电压等级正确选择兆欧表。兆欧表的引线必须使用绝缘良好的单根多股软线，两根引线不能缠在一起使用，引线也不能与电气设备或地面接触
B.
测量前检查兆欧表，开路时指针是否指在"∞"位，短路时指针是否指在"0"位
C.
测量前应将被测量设备电源断开并充分放电。测量完毕后，也应将设备充分放电。接线时，"接地"E端钮应接在电气设备外壳或地线上，"线路"L端钮与被测导体连接。测量电缆的绝缘电阻时，应将电缆的绝缘层接到"屏蔽端子"G上
D.
测量时，将兆欧表放置平稳，摇动手柄使转速逐渐增加到120转/分钟
【单选题】Do you know ________ the maths problem?
A.
what should we do with
B.
how should we do with
C.
what we should deal with
D.
how we should deal with
【单选题】Not until _____ more, _____ able to improve the situation. [ ]
A.
do we know, we will be
B.
we know; will we be
C.
do we know; will we be
D.
we know; we will be
【单选题】听力原文： We do not know when man first began to use salt, but we do know that it has been used in many different ways throughout history. Historical evidence shows, for example, that people who lived ove...
A.
To keep fish alive.
B.
To punish criminals.
C.
To preserve dead bodies.
D.
To help heal wounds.
【简答题】What do we know about cougars?
【简答题】What do we know about the man?
【单选题】What must we do in the park?
A.
Thank you.
B.
Yes, I am.
C.
We must keep off the grass.
D.
OK, I'm sorry.
E.
Yes, I do.
F.
No, he doesn't.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
