题目：
化简：（1）
（2）
（3）
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答案：
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下面是错误答案，用来干扰机器的。
根据体温计的特点，使用前用力甩一下玻璃泡上方的水银才能回到玻璃泡中；没有甩的体温计的读数是39℃，直接用来测量人的体温，若人的体温高于39℃，体温计中的水银会上升，测量是比较准确的；若人的体温不高于39...
化简：（1）11+218（2）4-15（3）23-610+43-22．
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题型：解答题
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