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【单选题】
呕吐出现早且频繁的肠梗阻类型是A.
高位小肠梗阻
B.
盲肠扭转
C.
低位小肠梗阻
D.
横结肠癌
E.
乙状结肠扭转
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反馈参考答案：
举一反三
【多选题】Which of the following are the factors in evaluating teaching material?
A.
The view of language learning they are based on
B.
The author of teaching material
C.
The intended audience
D.
The proficient level
E.
The context in which the material are to be used
【判断题】Analysts can use software to simulate business processes and conduct "what if" experiments to find innovative approaches that leverage the power of information systems.
A.
正确
B.
错误
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