| Dalton wondered why the heavier and
lighter gases in the atmosphere did not separate as oil and water do. He finally
concluded that the constituent (61) must exist in the form of
tiny particles or atoms and that these (62) be completely
mixed together in the atmosphere. This threw a new light in (63)
law of definite proportions. It was only necessary to suppose that the atoms
(64) combine into small groups of uniform (65)
and so form more complex substance; (66) the
mystery of this law was (67) . Dalton suggested, for
example, that carbon monoxide (68) formed by the one with
one (69) of atoms of carbon and oxygen, (70)
carbon dioxide results from a single (71) of
carbon uniting with two atoms of oxygen. Assuming this to be true,
(72) the definite p [单项选择]The primary purpose of the passage is to ______.
A. contrast possible outcomes of a type of business investment. B. suggest more careful evaluation of a type of business investment. C. illustrate various ways in which a type of business investment could fail to enhance revenues. D. trace the general problems of a company to a certain type of business investment. [单项选择]
Double Income and No Kids (DINK) becomes fashionable in China. The DINK couples are usually regarded as those who have higher educations and （1） careers with higher incomes. The increase in DINK families has shattered the Chinese traditional idea of the family and （2） typical. A survey conducted recently in Beijing by a market survey company （3） that about 33 percent of the 1,300 surveyed families in Beijing said they have （4） plans to have children. It is estimated there about 600,000 DINK families in large cities like Beijing, Tianjin, Shanghai, Shenzhen and Chongqing. Why they choose such a lifestyle is concluded in （5） reasons. Some are showing great worry for the rapid growth of population; some are indulged in building a more well-off family; some are showing sharp （6） to get themselves free from the obligation of raising children. （7）, most people still believe it is necessary to bear a child to keep the family line on. As an old Chinese saying goes: There are three aspect [单选题]金融机构违法将款项划入国库或者财政专户以外的其他账户的，由金融业监督管理机构责令改正，并处以违法划拨款项（ ）的罚款
A.一倍 B.二倍 C.三倍 D.五倍 [单选题]灰铸铁焊补时，由于()等原因，焊接接头容易产生白口铸铁组织。
A.石墨化元素过多 B.石墨化元素不足 C.冷却速度太慢 D.抗拉强度低 [判断题]根据《民用航空安全检查工作手册》第241条,内部演练结束后应做出评估, 并根据评估结果修订完善预案。评估内容应至少包括演练执行的符合性、预案适用性及适宜性。
A.正确 B.错误 [单选题]《铁路交通事故调查处理规则》规定一般事故分为()等级。
A.二个 B.三个 C.四个 D.五个 [单选题] 年发布的《供电监管办法》规定对用户受电工程启动竣工检验的期限，自接到用户受电装置竣工报告和检验申请之日起，低压供电用户不超过(____)个工作日。
A.3 B.5 C.7 D.8 [单选题]脑梗死患者病情稳定后尽早为患者行肢体被动运动,鼓励患者做肢体主动运动,防止肌肉( )和关节变形
A.酸疼 B.变形 C.萎缩 D.拉伤 [填空题]汽车操纵稳定性包括（）性和（）性两个内容。
[判断题]事故现场情况复杂时应扩大警戒区域，并严格进入的时间，保持一定安全距离，防止窖（井）口及周边部位垮塌。
A.正确 B.错误 [多选题]消防救援队伍各级安全负责人员需（），确保灭火救援作战训练行动安全。
A.建立健全安全管理组织 B.督促安全制度落实 B.组织安全理论技能学习训练 C.严密安全防范措施 D.开展安全监督检查 [多选题]我们日常工作中大量接触的不锈耐酸钢常用的牌号有（ ）、( )等。
A.1Cr13 B.00Cr13 C.00Cr18Ni10Ti D.1Cr18Ni9Ti 我来回答: 提交
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