【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】在Java中,实现用户界面功能的包是( )。
【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