排卵后在体内卵子的寿命是()
A．24小时
B．8小时
C．2天
D．3天
E．8小时
参考答案：A
In relation to contract law explain and distinguish between:
(a) a proposal (offer) and an invitation to treat; and (5 marks)
机动车辆在进出厂房、仓库大门、上下地中衡，危险地段、生产现场和倒车时，不得超过（）km/h。
A.15
B.10
C.5
D.20
