皮皮学，免费搜题
登录
搜题
【单选题】
有一人群,其共同表现为疲乏、淡漠、食欲差、恶心、忧郁、急躁、腿麻木和心电图异常等。有的表现为倦怠无力,多发性神经炎,主要表现为上行性周围神经炎,趾麻木、腱反射异常,肌肉乏力和酸痛、压痛,尤其腓肠肌压痛更显著。有的表现为心界扩大(右心室肥大),心动过速,呼吸窘迫,下肢水肿。有的人具有上诉两方面的症状。经调查,这些人长期食用过于精白的米和面,没有补充其他杂粮和副食。 上述人群发生该病的原因是缺乏:A.
维生素A
B.
维生素B2
C.
维生素C
D.
维生素K
E.
维生素B 1
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】People are often killed while crossing the road. Most of them are old people and children. Old people are often killed because they usually can't see or hear very well. Children are often killed becau...
【简答题】向心轴承主要承受 载荷,推力轴承主要承受 载荷,向心推力轴承同时承受 载荷。
【单选题】Which of the following is not true of those young computer hackers?
A.
Most of them are top students majoring in computer programming.
B.
For them, computer programming is the sole purpose for their life.
C.
They can stay with the computer at the center for nearly three days on end.
D.
Their 'love' for the computer is so deep that they want to be near their machine when they sleep.
【简答题】向心轴承主要承受 载荷,推力轴承主要承受 载荷。
【简答题】向心轴承主要承受 载荷
【单选题】Which of the following is NOT true of those young computer 'hackers'?
A.
Most of them are top students majoring in computer programming.
B.
For them, computer programming is the sole purpose for their life.
C.
They can stay with the computer at the center for nearly three days on end.
D.
Their 'love' for the computer is so deep that they want to be near their machines even when they sleep.
【简答题】A．Most of them are popular among their teachers. B．Their classes are held wherever they are working, C．They are likely to become famous stars. D．They often don't have enough time for their lesson.
【单选题】Which of the following is TRUE of those young computer 'hackers' ?
A.
Most of them are top students majoring in computer programming.
B.
For them, computer programming is the sole purpose for their life.
C.
They can always stay with the computer at the center without eating and sleeping.
D.
They lose all of their friends because of their deep 'love' for the computer.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
