【单选题】【消耗次数:1】
设置有遮光罩的双丝灯泡, 遮光罩应们位于近光灯丝的 ( ).
上方或前方
下方
任意位置;
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相关题目
【判断题】 前照灯的近光灯丝位于反射镜的焦点上,远光灯丝位于焦点的前方
①  正确
②  错误
【单选题】 前照灯灯泡中的近光灯丝应安装在( )。
①  反光镜的焦点处
②  反光镜的焦点上方
③  反光镜的焦点下方
【单选题】 采用双丝灯泡的前照灯,其远光灯丝功率较大,位于反射镜的( ).
①  焦点上
②  圆心上
③  镜面上
【判断题】 在调整光束位置时,对具有双丝灯泡的前照灯,应该以调整近光光束为主。()
①  正确
②  错误
【单选题】 可用作膜剂遮光剂的是( )。
①  聚乙二醇
②  甘油明胶
③  PVA17-88
④  二氧化钛
⑤  碳酸钙
【单选题】 可用作膜剂遮光剂的是()
①  碳酸钙
②  甘油明胶
③  聚乙二醇
④  二氧化钛
⑤  PVA17-88
【单选题】 双托掌的位置位于哪里?
①  鼻子前上方
②  眼睛正前方
③  胸部前方
④  额头的前上方
【单选题】 作为明胶空心胶囊辅料中遮光剂的是()
①  甘油
②  二氧化钛
③  十二烷基磺酸钠
④  对羟基苯甲酸酯类
⑤  山梨醇
【判断题】 线圈的匝与匝间,线圈与屏蔽罩间(有屏蔽罩时),线圈与磁心、 底板间存在的电容均称为分布电容。
①  正确
②  错误
【单选题】 吸收塔中塔板上的泡罩有什么作用?
①  分离天然气中水分
②  是贫甘醇的流动通道
③  将天然气分成细小气流,使其与三甘醇充分接触,促进脱水效率
④  阻挡天然气通过
随机题目
【单选题】 Last month Miss Han ______ a doctor.
①  married with
②  married to
③  was married with
④  got married to
【单选题】 Light waves and heart waves are all electromagnetic. ______ are radio waves.
①  Some
②  Such
③  As
④  So
【单选题】 Ancient Chang’an was seven times _____ the size of today’s Xi’an city.
①  /
②  as much as
③  that of
④  of
【单选题】 How difficult it is ______ the modern world without oil.
①  imagining
②  imagined
③  to imagine
④  having imagined
【单选题】 The exchange of goodwill mission greatly ______ a better understanding between the two countries.
①  carries out
②  brings around
③  breaks out
④  contributes to
【单选题】 I like this jacket better than that one, but it costs twice ______.
①  as much
②  so much
③  that much
④  too much
【单选题】 Young drivers under 25 have the highest number of accidents while those over 50 have ______.
①  the less
②  the least
③  the fewer
④  the fewest
【单选题】 The novelist is a highly ______ person whose works appeal to many readers.
①  imaginable
②  imaginative
③  imaginary
④  imagined
【单选题】 The reason why he didn’t take the exam was _____ he had an accident on his way to the school.
①  because
②  because of
③  that
④  due to
【单选题】 Our Chinese tradition is quite different _____ we only want to defend our own country, not to invade other countries.
①  because
②  for
③  in that
④  that