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【单选题】
斩波电力晶体管的缺点是( )。A.
功率容量小
B.
必须具备专门的强迫换流电路
C.
具有线性放大特性
D.
二次击穿而损坏
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【简答题】Passage The Road Not Taken Two roads diverged in a yellow wood, And sorry I could not travel both And be one traveler, long I stood And looked down one as far as I could To where it bent in the underg...
【单选题】What most people hate most _______ at in public. [ ]
A.
is being laughed
B.
being laughed
C.
is to laugh
D.
laughed
【单选题】We have the most population in the world, most of it _____ farmers.
A.
to be
B.
is
C.
are
D.
being
【单选题】______ most of the earth's surface is covered by water, fresh water is very rare and precious.
A.
As
B.
Once
C.
If
D.
Although
【简答题】when is this talk most likely being given?
【单选题】A Nobel prize would NOT be given to ______.
A.
an author who wrote a novel
B.
a doctor who discovered a vaccine
C.
a composer who wrote a symphony
D.
a diplomat who negotiated a peace settlement
【单选题】Of all the soldiers they had the ______ of being the fiercest, the most patriotic and the toughest.
A.
recognition
B.
reservation
C.
reputation
D.
recreation
【单选题】Of all the soldiers they had the______ of being the most fearless, the most patriotic, and the toughest.
A.
representation
B.
reservation
C.
recreation
D.
reputation
【单选题】In “The Road Not Taken”, which road turns out eventually to be the “right road” ?
A.
The one more traveled by.
B.
The one less traveled by.
C.
Both of the roads.
D.
Neither of the roads.
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