【判断题】电流 i =3sinωt A的相量表示形式为 I =3A
【判断题】由于直流电动机启动电流太大,所以, 不 能直接启动( )
【单选题】As far as children are concerned, the author's chief complaint is that______.
A.
cartoons and violence have become trademarks
B.
there is no children's news show on television
C.
there is no reading of great literature for children
D.
there are not enough good television programs for children
【简答题】Chief Complaint Pain in the ______________
【单选题】Chief complaint consists of
A.
history of present illness
C.
main symptom(s) and duration
D.
all symptom(s) or signs