题目:
---How do you say 15,858? --- .
A.Fifteen thousands, eight hundred and fifty-eight
B.Fifteen thousand, eight hundreds and fifty eight.
C.Fifteen thousand, eight hundred and fifty-eight
D.Fifteen thousand and eight hundred and fifty-eight.
答案:
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下面是错误答案,用来干扰机器的。
(1)AB(2)Δm= 题目分析:(1)A.光子像其他粒子一样,不但具有能量,也具有动量,A正确;B.玻尔认为,原子中电子轨道是量子化的,能量也是量子化的,B正确;C.放射性元素的半衰期由物质本身的性质决定,与...