下列说法正确的是（） A．常温下醋酸分子不可能存在于pH＞7的碱性溶液中 B．常

发布时间：2017-04-30 22:13 │ 来源：www.tikuol.com

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问题：

下列说法正确的是（）

A．常温下醋酸分子不可能存在于pH＞7的碱性溶液中

B．常温下向氯化铵溶液中加入少量氨水使溶液的pH＝7，则混合溶液中c(Cl^－)＞c(NH₄^＋)

C．0.1 mol/L的氯化铵溶液与0.05 mol/L的氢氧化钠溶液等体积混合，溶液中离子浓度c(Cl^－)＞c(NH₄^＋)＞c(Na^＋)＞c(OH^－)

D．0.1 mol·L^－1硫化钠溶液中离子浓度关系c(OH^－)＝c(H⁺)＋c(HS^－)＋c(H₂S)

考点：离子共存

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男，16岁，发现右颈侧部有一小瘘口多年，挤压后有白色分泌物溢出。局部曾红肿，抗炎后好转。检查：右胸锁乳突肌前缘下端有一瘘口，瘘口上方可及索条状瘢痕物

瘘管形成的原因是（）。

A.穿孔后形成食管瘘

B.结核菌形成的寒性脓肿破溃

C.放线菌感染后形成的慢性窦道

D.无法解释瘘管形成的原因

E.胚胎时，鳃裂没完全融合或闭锁不全

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某企业2007年1月向税务机关申报2006年度的应纳税所得额(利润总额)35万元。经税务机关核定，企业申报的应税所得额中包括了购买国库券的利息收入15万元，“营业外支出”账户中列支有违法经营的罚款支出3万元、各种非广告性质的赞助支出5万元、通过民政部门向困难地区捐赠6万元。企业全年平均职工人数50人，全年计入各种成本、费用中的工资总额106万元，并按工资总额计算提取了职工工会经费2.12万元、职工福利费14.84万元、职工教育经费1.59万元，并假设从1月1日起当地政府规定人均月计税工资标准为1600元。
根据所给内容回答下列问题(以万元为单位，小数点后保留两位)：

计算应纳税所得额时，允许扣除的公益．、救济性捐赠额为( )万元。

A．6

B．1.82

C．1.19

D．1.10

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阅读理解。
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。

     Have you ever seen any students whose trousers hang so low that you can see their underwear?
What do you think of that? Fashionable? Some of today's teenagers are big fans of such a look.   1
     The headmaster of a school in central Italy has asked students to stop wearing low-rise jeans that
expose underwear and parts of the body. His request came after a class trip, when he saw one boy's
baggy trousers slide to his feet.     2
But in Italy, a nation that takes fashion very seriously, the suggestion caused a debate among parents,
teachers and students. The issue is whether the headmaster's request will limit students' freedom- or
whether dress in Italian schools is too casual.
       3    ."We do not want to kick fashion out," the headmaster explained, "but extrems (极端) of fashion
like this are not right in school." Many other schools have now requested that their students also stop
wearing such trousers.
       4   . Ludovica Gaudio, 14, wore extremely low trousers exposing orange underwear in class. It was
cold, so she wore a matching orange scarf.  5   "I don't really feel comfortable in those sort of jeans," said Sarah Lattanzi, "in winter, when dressed like that, it's quite cold and I am afraid my stomach will ache."

A. But recently this trend has been at the center of an argument in Italian middle schools.
B. A parents' group praised the move in favor of good taste, while others advised schools
to stop worrying about fashion and fix up old school buildings.
C. He pointed out that this way of dressing is not suitable for school.
D. Most students have simply ignored the request
E. Another 14-year-old said she would probably respect the request, simply for practical reasons
F. Let us see that Italian students react differently to schools' requests
G. Schools should pay attention to things more important than students' clothes

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在CT征象上与血管网状细胞瘤最相似的肿瘤是（）。

A.囊性星形细胞瘤

B.室管膜瘤

C.髓母细胞瘤

D.皮样囊肿

E.囊性转移瘤

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肺痈之溃脓期，治疗方法应选用

A．清肺、化痰、排脓
B．清热、解表、排脓
C．清热、解毒、排脓
D．排脓、解毒
E．以上都不是

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