A person with myasthenia gravis notes increased muscle strength when he is treated with an acetylcholinesterase (AChE) inhibitor. The basis for his improvement is increased
A.
Amount of acetylcholine (ACh) released from motor nerves
B.
Levels of ACh at the muscle end plates
C.
Number of ACh receptors on the muscle end plates
D.
degradation of ACh at cleft of neuromuscular junction
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【判断题】有程序段如下: int flag; char ch; scanf("%c",&ch); flag=ch>='0'&&ch<='9'; if(flag) printf("%c\n",ch); 则当输入任意一个字符时,立即将该字符输出。