皮皮学，免费搜题
登录
搜题
【单选题】
在再沸器中溶液 而产生上升蒸气，是精馏得以连续稳定操作的一个必不可少的条件。A.
全部冷凝
B.
部分冷凝
C.
部分汽化
D.
全部汽化
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
【单选题】---The computer cost him 20, 000 dollars. ---It ____ be that expensive.It’s a used computer.
A.
may not
B.
can’t
C.
mustn’t
D.
needn’t
【简答题】The computer was used in teaching. As a result,not only , but students became moreinterested in the lessons. A. saved was teachers’ energy B.was teachers’ energy saved C. ...
【判断题】One of the drawbacks of a computer is that it cannot he used as a recreational device.
A.
正确
B.
错误
【单选题】有一盒静脉注射药%氯化钙,盒上标签每一安瓿10ml,盒内安瓿需仔细看才能识出药名,但剂量模糊不清,此盒药应( )
A.
查问清楚后再用
B.
酌情少量使用
C.
退回药房不用
D.
按医嘱使用
E.
按盒上标签用
【单选题】有一盒静脉注射药10%氯化钙,盒上标签每一安瓿10ml,盒内安瓿需仔细看才能识出药名,但剂量模糊不清,此盒药应
A.
查问清楚后再用
B.
酌情少量使用
C.
退回药房不用
D.
按医嘱使用
E.
按盒上标签用
【单选题】An 'internal computer' (Para. 2) is ________.
A.
a computer used exclusively by one company for its own problems
B.
a person's store of knowledge and the ability to process it
C.
the most up to date in home computer a company can buy
D.
a computer from the post-war era which is very reliable
【单选题】Why people invented the first computer?
A.
It was used to win the war.
B.
It was used to kill enemies.
C.
It was used to protect Allies.
D.
It was used to decode Nazi’s messages during the wars.
相关题目：