【单选题】在较短时间内引起触电者心室颤动而危及生命的最小电流,称为 致命电流 ,一般通电1s以上, _ mA的电流就足以致命。
【简答题】What is the main feature of a key?
【简答题】在较短时间内引起触电者心室颤动而危及生命的最小电流,称为 ,一般通电1s以上, mA的电流就足以致命。
【单选题】The key feature of an oligopoly is that there
A.
are many buyers and sellers.
C.
exists product differentiation.
D.
are only a few sellers.
【单选题】()是指春秋战国时期知识分子中不同学派的涌现及各流派争芳斗艳的局面。春秋战国时期,是由封建领主制向封建地主制过渡的时期,新旧阶级之间,各阶级、阶层之间的斗争复杂而又激烈。代表各阶级、各阶层,各派政治力量的学者或思想家,都企图按照本阶级(层)或本集团的利益和要求,对宇宙对社会对万事万物作出解释,或提出主张。他们著书立说,广收门徒,高谈阔论,互相辩难,于是出现了一个思想领域里“百家争鸣”的局面。所谓“...
【简答题】在较短时间内引起触电者心室颤动而危及生命的最小电流,称为 ,一般通电1s以上, mA的电流足以致命。
【简答题】The key feature of ballad is ______.
【单选题】It became a key feature of the Oral Approach in the 1960s that______.
A.
new language is introduced and practised in situations
B.
accuracy is maintained
C.
reading and writing are introduced later
D.
translation should be avoided