Which of the following is responsible for the fact that the increase in magnification of a microscope does not enable us to see more clearly in detail? ()
A. the linear propagation of light
B. the refraction of light
C. the reflection of light
D. the diffraction of light
查看答案
The necessary conditions for producing x-rays are : ()
A. high voltage power supply and low voltage power supply
B. high voltage power supply and X-ray tube
C. high voltage power supply and suitable target material
D. high speed electrons beam and proper target
What factor determines the shortest wavelength in a continuous X - ray spectrum? ( )
A. the current in the tube
B. the target material
C. the size of the target
D. the voltage of the tube
群体规范被群体成员接受以后,会成为一种内在的控制方式影响成员的行为。正确答案:错
唐僧是一个好领导吗?
A. 是,因为得到了领导的信任
B. 不是,好歹不分
C. 是,因为带团队取得了真经
D. 不是,优柔寡断、啰里啰嗦
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