【单选题】下列关于用量的说法不正确的是( )
A.
给试管里的液体加热时,液体不超过容积的1/3
B.
洗涤实验用过的试管时,每次注入1/2试管水,振荡后倒掉
C.
取用液体时,如果没有说明用量,液体一般取1mL~2mL
D.
使用酒精灯时,酒精灯内的酒精不超过容积的1/3
【简答题】服务过程包括( )公共化和( )私人化。
【简答题】2050电台,需要按( )键2秒以上,才可以进入保护菜单。
【单选题】关于实验过程中的操作安全,不正确的是()。
B.
浓酸.浓碱等废液,倒入水槽时,必须先将水门打开
C.
高温物体(如灼热的坩埚,瓷舟等)就近放下,以免烫伤
【多选题】如图所示的装置是化学实验中常用的装置,有关此装置的说法正确的是( )
D.
长颈漏斗伸到液面以下,主要原因是防止添加液体时液体飞溅
【单选题】Communication would be “a process of transmitting ideas, information, attitudes by the use of symbols, words, pictures, figures from _________ to _________, for the purpose of influencing with intent”...
B.
Originator; originator
【单选题】In ordinary conversations, participants are expected, first of all, to _____, otherwise, communication would be break down.
【单选题】A(n) ________ network of communication would most likely be found in direct-line authority relations with no deviations.
【判断题】McLuhan had accurately predicted that future electric media would create a "global village" of verbal communication that would be accessed all over the world.