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【单选题】
当刺激强度低于阈强度时,刺激可兴奋组织将
A.
不引起任何反应
B.
引起电紧张性扩布的局部反应
C.
引起衰减传导的动作电位
D.
引起可传导的局部电位
E.
引起可传导的动作电位
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【单选题】高压线辐射场强与气候变化的关系是:()。
A.
雨天辐射场强高,晴天辐射场强低
B.
雨天辐射场强低,晴天辐射场强高
C.
没有差别
D.
没有关系
【单选题】— We had ________ really cold February this year. -I can’t remember ________ spring when it snowed in Changzhou .
A.
a; 不填
B.
不填; the
C.
the; a
D.
a; a
【单选题】— Are you still going to Shanghai for the Spring Festival? — Yes, but I really _____ because I have a lot of things to deal with.
A.
can’t
B.
mustn’t
C.
won’t
D.
shouldn’t
【单选题】—This winter in Kunming is really cold. —Really? Kunming, the Spring City? One of the most beautiful in China?
A.
city
B.
a city
C.
cities
D.
countries
【单选题】熔断器的额定电流是指( )电流。
A.
熔体额定
B.
熔管额定
C.
其本身的载流部分和接触部分发热所允许通过的
D.
保护电气设备的额定
【单选题】— How was your Spring Festival Holiday in Hainan? — Really wonderful! I have never had _____ one before. [     ]
A.
a very pleasant
B.
a more pleasant
C.
a most pleasant
D.
so a pleasant
【单选题】On such a sunny morning with spring in the air, she was really______a romantic walk in the woods.
A.
in the need for
B.
in the feel for
C.
in the mood for
D.
in the temper for
【单选题】---- Li Yuchun is said to have been invited to 2014 CCTV Spring Festival Show. ---- Really? It’s been a long time ___________ she won the champion in Super Girl in 2005.
A.
since
B.
that
C.
when
D.
before
【单选题】The spring outing really relaxed us a lot. That is       its value lies
A.
what
B.
where
C.
how
D.
why
【简答题】The spring outing really relaxed us a lot. That is its value lies. Awhat       Bwhere      Chow       Dwhy
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