皮皮学，免费搜题
登录
搜题
【单选题】
常用的消毒酒精浓度为:A.
75%
B.
50%
C.
90%
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】与模拟图像传输相比较,数字图像传输具有哪些优越性?
【单选题】This passage is most possibly chosen from______.
A.
a newspaper about war
B.
a scientific paper about adventures
C.
a textbook on space travel
D.
a magazine for tourists
【单选题】听力原文：M: I'm still waiting for the clerk to come back and make some copies of this paper for me. W: Why bother him? I'll show you how easy it is to operate the machine. What does the woman mean?
A.
The clerk doesn't like to be bothered.
B.
The machine was just repaired.
C.
She can teach the man to work the machine.
D.
The man shouldn't make any more copies.
【单选题】Electronic 'money' refers to ______.
A.
money that denies direct transactions
B.
the bank paper and coins
C.
money issued by the electronic industry
D.
money that is hard to obtain
相关题目：