【单选题】Django 2.2 restful应用中在views.py文件中创建视图类时须继承_______。
B.
rest_framework.viewsets.ModelViewSet
C.
api.viewsets.ModelViewSet
【简答题】二阶环节 G (s)=10/( s 2 +3.6 s +9) 的阻尼比为() 。
【多选题】Which motor is primary if AC power is available?
A.
Squirrel-cage induction motor
C.
wound-rotor induction motor
【简答题】从制造角度看,机器由许许多多零件组成,零件是指机器中独立加工机件。是机器中的最小()。大多数机器都要用到的零件,称为()。
【单选题】二阶环节 G ( s )=10/( s 2 +3.6 s +9) 的阻尼比为( )。
【单选题】A burning AC motor would be considered what class of fire?
【单选题】Django 2.2 restful应用中,数据模型类为User,获取该模型所有数据的写法是______。
【简答题】django restful应用中须添加那个app后,方能对用户进行基于令牌(token)的身份验证________________。
【单选题】The energy consumed by an AC motor, as strictly reactive power, is ____.
A.
used to do mechanical work
B.
used to establish the magnetic field of the motor
C.
lost as heat generated by the windings
D.
lost in doing work to turn the motor itself
【简答题】Django restful应用中http方法GET 、POST、_____________、DELETE分别用于获取、提交、更新、删除网络资源。