题目:
物体的重量等于()乘以()。
A.体积、尺寸
B.体积、比重
C.材质、密度
D.大小、尺寸
答案:
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参考答案:C解析:Walking from his room to the end of the hall and back before discharge is a specific, measurable, attainable, timed goal. It's also a client-oriented o...