解析 首先句子后面是作定语的,由主句可以知道,修饰的是主语element.因为atoms是原子的意思,对于元素来说,逻辑关系自然是“元素里的原子”,所以element和atoms具有从属关系,用whose(注意啦!在定语从句表示从属关系的时候,关系词whose不仅仅适用于人,也可以适用于物) ...
百度试题 题目An element is a substance all of _ atoms have the same atomic number. A.thatB.whoseC.whatD.which相关知识点: 试题来源: 解析 B
A mixture contains (a) a matrix material containing units of formula C:Q where Q = a non-bonding electron pair comprising O, S, Se or N; and (b) a material which is capable of emission and which contains an element of atomic number above 20. An independent claim is also included ...
AN的意思 AN 英文缩写AN 英文全称Atomic Number 中文解释原子序数 缩写分类化学化工、数学物理 缩写简介AN其他解释 酸值AN 丙烯腈AN 接取节点an 接入网an 黑(色)棘皮症AN 听觉噪音AN 乙腈,氰化甲烷AN 锕射气An 听神经瘤AN 乙酰萘AN 空军-海军AN 自然空气AN 等等AN 陆海军AN 神经性食欲缺乏AN 天方夜谭,一千...
Atomic number is the number of protons in the nucleus of an element. It defines the position of the element in the periodic table. Atomic weight, which is a another number that appears next to the element's symbol, is an average of the atomic masses of all the isotopes of that element...
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第三方库bs4中,find_all() 方法find_all( name , attrs , recursive , string , **kwargs ) 如果想查找只符合某一个条件的特定标签内容,可以结合使用name、attrs两个参数,attrs 参数定义一个字典参数来搜索包含特殊属性的tag。如下所示: find_all(name="p",attrs={"class": "tem"})是将... A. 正确...
If you know the atomic number and the mass number of an isotope of an element, how can you determine the number of protons and neutrons? Answer and Explanation: The atomic number is equal to the number of protons in an atom. For ...
an element have the same atomic number. You will remember that the atomic number is the number of protons (= very very small pieces of matter that carry positive or Å electricity) in the nucleus or centre of an atom, and this number determines or decides the nature of...