下列财产中，不得抵押的是（）。
A.土地所有权
B.抵押人所有的房屋
C.抵押人所有的机器
D.在建工程
参考答案：A
--- Could you tell me ?
--- Certainly. In half an hour.
A．when will the train to Chengdu leave
B．when the train to Chengdu left
C．when would the train to Chengdu leave
D．when the train to Chengdu will leave
土壤的空间变异性
