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 高等教育 / 大学化学

市售硫酸标签上标明的浓度为96%,一般是以( )表示的
(A) 体积百分浓度
(B) 质量体积百分浓度
(C) 质量百分浓度
  积分
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  • [多选题] 澳大利亚人在人际交往中呈现出的基本特点是() A.“亦英亦美”,以“英”为主 B.兼收并蓄,多姿多彩 C.极端自尊 D.偏爱“国货”商务礼仪
  • At the University of Kansas art museum, scientists tested the effect of different colored walls on two groups of visitors to an exhibit of paintings. For the first group the room was painted white; for the second, dark brown. Movement of each group was followed by an electrical equipment under the carpet. The experiment showed that those who entered the dark brown walked more quickly, covered more area, and spent less time in the room than people in the white one. Dark brown made people more active, but the activity ended sooner. Not only the choice of colors but also the general appearance of a room affects those inside. Another experiment presented people with photographs of faces whose energy was to be commented. Three groups of people were used; each was shown the same photos, but each group was in an ordinary room-a nice office. The third was in a tastefully designed living room with carpeting. Results showed that the people in the beautiful room tend to give higher marks to the faces than those in the ugly room did. Other studies that students do better on tests taken in comfortable room than in ordinary-looking or ugly rooms. (1)Which of the following is the best expression of the main idea of this passage?(2分)A、People in beautiful rooms tend to give higher marks to photos of faces than people in ugly rooms.B、The color and general appearance of a room have a deeper effect on the behavior of the people in it.C、The University of Kansas has studied the effects of the color of room on people''s behavior.D、Beautifully furnished, light-coloured rooms make people more comfortable than ugly, dark rooms.(2)According to the passage, we may conclude that the whiter a room is _ _ _ _ _ _ _ _ .(2分)A、the longer people like to stay in it B、the sooner people in it will leaveC、the more active people in it will becomeD、the more excited people(3)What is referred to as the "general appearance" in this passage is _ _ _ _ _ _ _ _ .(2分)A、how many broad windows a room has, through which sunlight might come inB、the size of a roomC、whether there are beautiful walls in a roomD、what the room looks like(4)This passage provides us with _ _ _ _ _ _ _ .(2分)A、a piece of scientific informationB、a normal lessonC、an interesting testD、a piece of news(5)At least how many tests were carried out by the scientists referred to in this passage?(2分)A、ThreeB、TwoC、Only oneD、No one knows新发展英语综合教程(二)
  • 传统的部门化的方法和途径包括( )。A、职能部门化B、弹性部门化C、区域部门化D、过程部门化E、用户部门化管理学原理
  • 评价在本质上是一种通过协商而形成的心理建构,坚持“价值多元性”的信念,反对管理主义倾向。这是 A.第一代评价 B.第二代评价 C.第三代评价 D.第四代评价 E.课程与教学论
  • 桥涵的养护中( )是指采用临时性措施在最短的时间内恢复交通的工程措施。a.小修保养b.专项抢修工程c.大修d.中修桥梁工程技术
  • 味连的性状鉴别特征是()a.多为单支,弯曲形如蝎尾,“过桥”较短。b.多为单支,略呈圆柱形,微弯曲,较粗壮,“过桥”较长。c.卷缩成团,根细长密生节上。d.多分枝,集聚成簇,常弯曲,形如鸡爪,有“过桥”。中药鉴定