更多“用 0.1mol/L 的 NaOH 标准溶液滴定 0.1mo”相关的问题
网络专题讨论（Usenet News）是什么？
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属于顺式作用元件的是（）。
A.转录抑制因子
B.转录激活因子
C.O因子
D.ρ因子
E.增强子
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下列哪项是冷溶法制备糖浆剂的优点()A.能防止微生物污染B.防止糖的转化与焦化C.有助于糖剂的滤清
下列哪项是冷溶法制备糖浆剂的优点() A.能防止微生物污染 B.防止糖的转化与焦化 C.有助于糖剂的滤清 D.提高糖浆剂的保存性
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影响接地电阻大小的因素为（） 及土壤的类型
A、接地桩的电阻
B、连接引线的电阻
C、接地桩和土壤间的接触电阻
D、电缆的长度
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算术逻辑运算单元（ALU）是运算器的核心部分。
A. 正确B. 错误
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下列表述正确的是（）。
A.采煤工作面风量增加时，回风巷瓦斯浓度一定降低；
B.轴流式风机必须使用反风道实现反风；
C.落煤时的瓦斯涌出量大于其它工序；
D.采空区瓦斯涌出随风量增加而减少
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Passage Two When imaginative men turn their eyes towards space and wonder whether life exists in any part of it, they may cheer themselves by remembering that life need not resemble closely the life that exists on Earth. Mars looks like the only planet where life like ours could exist, and even this is doubtful. But there may be other kinds of life based on other kinds of chemistry, and they may multiply on Venus or Jupiter. At least we cannot prove at present that they do not. Even more interesting is the possibility that life on their planets may be in a more advanced stage of evolution. Present-day man is in a peculiar and probably temporary stage. His individual units retain a strong sense of personality. They are, in fact, still capable under favorable circumstances of leading individual lives. But man’s societies are already sufficiently developed to have enormously more power and effectiveness than the individuals have. It is not likely that this transitional situation will continue very long on the evolutionary time scale. Fifty thousand years from now man’s societies may have become so close-knit that the individuals retain no sense of separate personality. Then little distinction will remain between the organic parts of the multiple organism and the inorganic parts (machines) that have been constructed by it. A million years further on man and his machines may have merged as closely as the muscles of the human body and the nerve cells that set them in motion. The explorers of space should be prepared for some such situation. If they arrive on a foreign planet that has reached an advanced stage (and this is by no means impossible), they may find it being inhabited by a single large organism composed of many closely cooperating units. The units may be "secondary"—machines created millions of years ago by a previous form of life and given the will and ability to survive and reproduce. They may be built entirely of metals and other durable (耐用的) materials. If this is the case, they may be much more tolerant of their environment, multiplying under conditions that would destroy immediately any organism made of carbon compounds and dependent on the familiar carbon cycle. Such creatures might be relics of a past age, many millions of years ago, when their planet was favorable to the origin of life, or they might be immigrants from a favored planet.
A．human societies will be much more cooperativeB．man will live in a highly organized worldC．machines will replace manD．living beings will disappear from Earth
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对于同一套种有催化裂化装置，随着掺渣率的提高，在处理量等相同条件下，气体产率和反应生焦率（），装置能耗和加工损失（）。
A.增大，减小
B.减小，增大
C.增大，增大
D.减小，减小
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男，45岁。发现甲状腺左叶包块2个月。查体；包块质硬，表面欠光滑，动度较小，左颈部淋巴结肿大。术前诊断，最可靠的方法是（）.
A . A.甲状腺B超
B . 甲状腺CT
C . 细针穿刺细胞学检查
D . ECT检查
E . 甲状腺磁共振检查
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虚开发票是指为与自己没有发生直接购销关系的他人开具发票的行为，属于严重的违法行为。
A.对 B.错
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新规简化外债和境外放款登记管理，对跨境资金集中运营项下的外债和境外放款实行“（）”；允许跨国公司备案后直接开展资本项目收入结汇支付便利化改革试点，在相关资金结汇和支付使用时，无需事前逐笔提供真实性证明材料。
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十五规范：（）；与客人接触时，第一句话永远是你说的；与客人交流后，最后一句话永远是你讲的。
A.在距离客人10步时，用目光关注客人
B.在距离客人10米时，用目光关注客人
C.在距离客人5步时，向客人问候
D.在距离客人5米时，向客人问候
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以下选项中，属病理形态诊断的是（）。
A.心房纤颤
B.心慌气短
C.风湿性心脏病
D.二尖瓣狭窄
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食品卫生标准中，严重危害人体健康的指标是（）
A.菌落总数、大肠菌群数 B.致病性微生物及其毒素等 C.植物化学物 D.水分、含氮化合物、酸价等 E.维生素、蛋白质、黄酮类等
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题目内容
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参考答案
十点题库官方参考答案
（由十点题库聘请的专业题库老师提供的解答）
