【单选题】下列关于近视的说法,正确的是()
A.
"假性"近视指用阿托品散瞳后检查,近视度数消失,呈现为正视或远视,为不可逆
B.
真性近视指用阿托品散瞳后检查,近视屈光度为降低或降低的度数<0.5D< /div>
【单选题】两个电阻串联,已知 R1=2R2,U1=4V,则U2为( )
【单选题】What does the result show?
A.
Breakfast has little to do with a person's work.
B.
Girl students should have little for breakfast.
C.
Breakfast has great effect (影响) on work and study.
【多选题】关于目视进近下列说法不正确的是:
C.
目视进近必须由飞行员首先提出申请管制员批准方可实施。
【简答题】Answer question 5 What does "demonstration effect" mean here? What is the result of it?
【单选题】What does layoff result in?
A.
The workers who always change jobs don't feel secure.
B.
The workers are under mental pressure.
C.
It can damage the structure of the society.