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【单选题】
脊髓灰质炎病毒主要侵犯()A.
三叉神经节
B.
脑神经节
C.
脊髓前角神经细胞
D.
神经肌肉接头
E.
海马回锥体细胞
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举一反三
【单选题】Wilson: Are you feeling any better today? I hear you got the flu. Jim:______.
A.
I'm afraid not. I feel worse.
B.
Yes, I got the flu.
C.
I feel good today.
D.
No, I've been in bed for nearly a week.
【单选题】The use of transformer oil in a minimum-oil circuit breaker is ()
A.
to quench the arc and establish an insulated break between the contacts.
B.
to quench the arc and build insulation between the arc-quenching chamber and ground
C.
to establish an insulated break between the contacts and build insulation between the arc-quenching chamber and ground.
D.
to protect the circuit breaker from firing
【单选题】The wear of two metal surfaces can be reduced to minimum by use of ______.
A.
a suitable lubricant
B.
a proper coolant
C.
a sealing agent
D.
a hydraulic fluid
【简答题】I’ve got flu. (GP) ________________
【单选题】By regulation，you MUST keep a record of the use of your radiotelephone for a minimum of（）.
A.
six months
B.
one year
C.
two years
D.
thirty months
【单选题】－I'm afraid I've got terrible flu. －( ).A: Never mindB: Keep away from meC: You&
A.
-I'm afraid I've got terrible flu. -( ). A: Never mind
B.
Keep away from me
C.
You'd better go and see a doctor
D.
You need to be more careful
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