题目内容

以下哪项不是儿童肠梗阻的临床表现()

A. 腹泻
B. 腹痛
C. 呕吐
D. 腹胀

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腺样体又称咽扁桃体,--岁后开始萎缩

A. 5
B. 10
C. 15
D. 20

以下哪项不是肠套叠的分型()

A. 回结型
B. 空结型
C. 小肠型
D. 结肠型

Why can the factory where Mark worked before make so many cars in one day?

When did Henry Ford install the first assembly line in his factory?

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