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【单选题】
关于化学性突触传递的特征,下列叙述 错误 的是A.
单向性传递
B.
兴奋节律性不变
C.
对内环境变化敏感
D.
可以总和
E.
有后放现象
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举一反三
【简答题】In the 1970s, the high standard and cost of living contributed to the emergence of ______.
【单选题】Build up Your Vocabulary Exactly what do you do during a normal day? How do you spend your time? Paul T. Rankin very much wanted an answer to that question. To get it, he asked sixty-eight individuals...
A.
Y
B.
N
C.
NG
【简答题】A study by tracing the history of the emergence and spread of 335 infectious diseases from 1940 to 2004 provides a new point of view on ________.
【简答题】活性炭吸附处理主要目的是除游离氯时在 ( ) 之前, 除有机污染物质时在 ( ) 之后。
【单选题】. Do you often shop in our store? How much do you ______ spend every time?
A.
approximately
B.
properly
C.
immediately
D.
probably
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