题目内容：
下列关于急性胰腺炎时淀粉酶变化的描述，正确的是A．尿淀粉酶增高迟于血清淀粉酶
B．尿淀粉酶下降较血清淀粉酶晚
C．尿淀粉酶测定值＞128U/dl，(Somogyi法)时有诊断意义
D．坏死型胰腺炎，尿淀粉酶不一定很高
参考答案：
选择题：下列关于急性胰腺炎时淀粉酶变化的描述,正确的是 A.尿淀粉酶增高迟于血清淀粉酶 B.
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