在显微镜下要把视野中的物镜“E”从图甲转为乙,其正确的操作步

在显微镜下要把视野中的物镜“E”从图甲转为乙,其正确的操作步骤是(  

A.将玻片往右上方移动,并把低倍物镜转换成高倍物镜

B.将玻片往左下方移动,并把低倍物镜转换成高倍物镜

C.将玻片往右上方移动,并把高倍物镜转换成低倍物镜

D.将玻片往左下方移动,并把高倍物镜转换成低倍物镜

答案

B

相关题目

p{font-size:10.5pt;line-height:150%;margin:0;padding:0;}td{font-size:10.5pt;}(
p{font-size:10.5pt;line-height:150%;margin:0;padding:0;}td{font-size:10.5pt;}(08年唐山市二模) 过椭圆的焦点且垂直于长轴的弦的长度与此焦点到相应准线的距离相等,
Move Earth—it’s no science fiction LONDON—Scientists have found an unusual
Move Earth—it’s no science fiction LONDON—Scientists have found an unusual way to prevent our planet from overheating: move it to a cooler spot. All you have to do is send a few comets(彗星
One man was to meet his wife downtown and spend some time shopping with her. He
One man was to meet his wife downtown and spend some time shopping with her. He waited  16  for 15 minutes. Then he waited impatiently for 15 minutes more. After that, he became  17 . When he saw a
点M(-3,-1)向右平移3个单位后,得到点M′的坐标为(   
点M(-3,-1)向右平移3个单位后,得到点M′的坐标为(     ,    ). 
太平天国时期有这样一张布告:“殷实之家,务要投诚纳贡
太平天国时期有这样一张布告:“殷实之家,务要投诚纳贡,以助军饷;贫寒之民,出力报效,共同剿灭胡奴,同扶真主。”该材料表明 A.太平天国运
促进①②地区农业的发展的正确措施是              
促进①②地区农业的发展的正确措施是                                                                  ( )     
 It is required that the drugto have serious side effectsfrom the market. A.
 It is required that the drugto have serious side effectsfrom the market. A. reported, withdraw                                B. should report, reject C. reportin
已知向量,,若,则实数的值为(    ) A.1           
已知向量,,若,则实数的值为(    ) A.1               B.     C.          D.

最新题目