依次填入下列句子横线处的词语，最恰当的一项是[ ] ①中国科学考察队员在世界上首

【说明】
市劳动局需要建设一个信息系统项目，某监理公司承担了实施阶段的监理任务。
建设单位采用公开招标方式选定承建单位。在招标文件中对省内与省外投标人提出了不同的资格要求，并规定9月28日上年10点为投标截止时间。A和B等多家公司参加投标，B公司9月29日提交了投标保证金。9月29日由该市信息办主持举行了开标会。但本次招标由于招标人原因导致招标失败。

【问题2】
招标人招标失败造成投标单位损失是否应予补偿并说明理由。

硬肿病与硬皮病的鉴别错误的是（）

A.前者初发部位颈部，躯干；后者以面部及四肢远端为多

B.前者皮肤色泽正常或棕黄或带苍白；后者增生或杂以色素减退斑

C.前者无毛细血管扩张性红斑；后者则较多见

D.前者表皮正常；后者萎缩

E.前者皮损炎细胞浸润较多见；而后者较少见

某同学收集了班级同学“氢气还原氧化铜”实验后的固体残渣（含铜和氧化铜），欲从中回收单质铜和制取硫酸铜溶液，他设计了如下实验方法方案：

（1）称量．称量收集到的固体残渣20g，需要的仪器是 _________ ．

（2）溶解．将20g称量好的固体残渣放入烧杯中，加入过量的稀硫酸溶液，用玻璃棒不断搅拌，直至反应完全．烧杯中发生反应的化学方程式为： _________ ．

（3）过滤．除滤纸外，还需要从上图选用哪些仪器 _________ （填字母）．

（4）洗涤干燥．洗净滤纸上的固体，干燥后称量，此固体名称为 _________ ．

（5）收集滤液．滤液中所含溶质的化学式是 _________ ．

（6）分析．为了除去滤液中过量的硫酸，应往滤液中加入过量的下列 _________ （填编号）固体粉末，过滤．

①氧化铜  ②氢氧化钠  ③铁  ④硫酸铜

在滤液中加入过量的固体粉末，原因是 _________ ；实验现象是 _________ ．

People are indulging in an illusion whenever they find themselves explaining at a cocktail(鸡尾酒 ) party, say, that they are "in computers," or " in telecommunications," or "in electronic funds transfer". The implication is that they are part of the high-tech world. Just between us, they usually aren’t. The researchers who made fundamental breakthroughs in those areas are in a high-tech business. The rest of us are (11) of their work. We use computers and other new technology components to develop our products or to organize our affairs. Because we go about this work in teams and projects and other tightly knit working group(紧密联系在一起的工作小组 ), we are mostly in the human communication business. Our successes stem from good human interactions by all participants in the effort, and our failures stem from poor human interactions.
The main reason we tend to focus on the (12) rather than the human side of work is not because it’s more (13) , but because it’s easier to do. Getting the new disk drive installed is positively trivial compared to figurine out why Horace is in a blue funk(恐惧)or why Susan is dissatisfied with the company aver only a few months. Human interactions are complicated and never very crisp(干脆的,干净利落的) and clean in their effects, but they matter more than any other aspect of the work.
If you find yourself concentrating on the (14) rather than the (15) , you’re like the vaudeville character(杂耍人物)who loses his Keys on a dark street and looks for them on the adjacent street because, as he explains, "The light is better there!\

A．technology

B．sociology

C．physiology

D．astronomy

甲烷是一种高效清洁的新能源，0.25mol甲烷完全燃烧生成液态水时放出222.5kJ热量，则下列热化学方程式中正确的是 [ ]

A. CH₄(g) + 2O₂(g) == CO₂(g) +2H₂O(l)    ΔH= －890 kJ·mol^-1

B. 2CH₄(g) + 4O₂(g) == 2CO₂(g) + 4H₂O(l)   ΔH= +890 kJ·mol^-1

C. CH₄(g) + 2O₂(g) == CO₂(g) +2H₂O(l)    ΔH= +890 kJ·mol^-1

D. 2CH₄(g) + 4O₂(g) == 2CO₂(g) + 4H₂O(l)   ΔH= －890 kJ·mol^-1