【判断题】软开关电路是为了减少甚至消除开关损耗和开关噪声。
【单选题】下图中的图形中是常见的安全标记,其中是轴对称图形的是 [ ]
【单选题】______________ airplane is faster than ______________ train. [ ]
【单选题】You look familiar. Have we met before?
A.
Yes, we live near each other.
【单选题】You'd better go there by train. The train ticket is ________ the airplane ticket. [ ]
A.
as cheap three times as
B.
as three times cheap as
C.
three times cheaper than
D.
cheaper three times than
【单选题】Is an airplane ____________ than a train? [ ]
【单选题】Fred Hi. ______You look familiar. Amanda Yes. We met on campus last week, and you asked me the same question.
B.
Do you know the way to the campus?
C.
Haven't we met before?
【单选题】如图,图中的图形是常见的安全标记,其中是轴对称图形的是( )
【单选题】You look familiar, have we met before?