A.绝缘试验
B.B.电气试验
C.C.耐压试验
D.D.机械试验
Ⅱ．心理学家罗森塔尔曾对小学1～6年级每年级3个班学生进行了一次智力测验，然后将每班学生分成两组，并谎称这是根据智力测验成绩来分组的。其中一组占班级总人数20%，称为高智商组(A组)，实验支持者将该组学生名单交给所在班级新任教师，并告诉他们，预测表明，这一部分学生“在智力上有很大的发展可能性”，“具有在不久的将来产生学业冲刺的能力”。各班其余80%的学生组成普通组(B组)。实际上，各班学生是用随机分派的方法分成两组的。这就是说，分组时根本没考虑事先进行的智力测验。在实验前各班内A、B两组被试智力在统计上是相等的。经过8个月教学后，发现A组学生比B组学生智商有了更大的增长。
(1)该实验设计属于前实验设计，准实验设计亦或真实验设计
(2)该实验中的因变量、自变量分别是什么
(3)这种实验设计的特点是什么
| Futurists love computers. After all, 40
years ago electronic digital computers didn’t exist; today microchips (微型集成电路片)
as tiny as a baby’s fingernail are making all sorts of tasks faster and easier.
Surely the future hold still more miracles. Some of the computer experiments now going inspire imagination of the future. For example, scientists are working in devices that can electronically perform some sight and hearing functions, which could make easier for the blind and deaf. They are also working on artificial arms and legs that respond to the electric impulses (脉冲) produced by the human brain. Scientists hope that someday a person who has lost an arm could still have near-normal brain control over an artificial arm. Video games, computerized effects in movies, and real-life training machines now being used by the U. S. Arm A. predict new educational achievement B. make tourism more successful C. help people have a bright look at tomorrow D. travel to the ocean floor to study it [单选题]19.哪项是卵巢良性囊性畸胎瘤发生蒂扭转最主要的表现
A.体温达39℃ B.恶心,频繁呕吐 C.突然剧烈下腹痛 D.血白细胞总数明显增高 E.阴道有出血 [判断题]第5腰椎棘突至耻骨联合上缘中点的距离为骶耻外径。
[多项选择]国际上，道德教育一般采用两种方式进行，即（）
A. 显性德育 B. 隐性德育 C. 班级德育教育 D. 个人德育教育 [简答题]D001 工作许可人的安全责任包括哪些?
[判断题]交通肇事后逃逸致人死亡的定故意杀人罪。
A.正确 B.错误 [单选题]中心静脉压的正常值为
A.4~12mmHg B.4~12cmH2O C.60~89mmHg D.60~89cmH2O E.90~139mmHg 我来回答: 提交
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