髌骨软骨的营养主要来自
A．关节液B．股四头肌的血液供应C．关节囊的血液供应D．髌韧带的血液供应E．髌骨的滋养动脉
参考答案：A
In relation to the management and administration of a company limited by shares:
(b) Explain the legal constraints that limit the actions of the board of directors and the executive body. (5 marks)
压缩机（）是将曲轴的旋转运动转换为活塞的往复运动的构件。
