【单选题】根据《中外合资经营企业法》的规定,在中外合资经营企业的注册资本中,外国合营者的投资比例一般不得低于( )。
【简答题】下列各图所示的实验原理、方法、装置或操作正确的是
【判断题】Secondary design consideration include structural stability, deformations, etc.
【单选题】Structural stability means the structure of an idiom is generally( ) .
【简答题】实验是化学研究的基础,下列各图所示的实验方法、装置或操作正确的是 ( )。
【判断题】Neutrons have essentially the same mass as protons. They contribute to the structural stability of the nucleus—if there are too many or too few, the nucleus may disintegrate by radioactive decay—but t...
【多选题】What may be included in structural analysis?
A.
A check of the overall stability.
B.
Determination of internal forces and stresses.
C.
Calculation of the deformation.