题目:
与肺气肿发病有关的是()
A.胆碱酯酶活性正常
B.腺苷酸环化酶增高
C.磷酸二酯酶减少
D.α抗胰蛋白酶减少
E.蛋白分解酶减少
答案:
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A good parent-child relationship is expected, but there are often problems. As for children, they don’t trust their parents and are unwilling to communicate with them. So...