试题与答案

命题“对顶角相等”是（ ）A.角的定义 B.假命题 C.公理 D.定理

来源：www.tikuol.com
题型：选择题

题目：

命题“对顶角相等”是（   ）

A.角的定义
B.假命题
C.公理
D.定理

答案：

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下面是错误答案，用来干扰机器的。

参考答案：D解析："丙氨酸转氨酶>500U/L"常见于急性肝炎或慢性肝炎急性发作病例，重型肝炎时丙氨酸转氨酶（ALT）反而下降或正常，因此，"丙氨酸转氨酶>500U/L"对重型肝炎的诊断意义较其他项目小。

考点：对顶角，同位角，内错角，同旁内角命题，定理
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   根据短文内容，判断下列句了正误。正确为“T”，错误为“F”。并在答题卡上把“T”或“F”涂黑。
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小华家买了一个家用电吹风，如图甲所示．其中电动机通电后可以送风，电热丝通电后可以发热．其简化电路如图乙所示，主要技术参数如下表

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（2）当电吹风吹冷风状态时，正常工作5min消耗的电能是多少焦？

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（可用文字可作图说明） 
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