个人房屋抵押贷款不得（）。A、流入证券市场 B、用于个人经营 C、用于股本权益性投资

贫液的转化度越大越好。

侧切伤口一般会在（）后愈合

A、1周

B、5周

C、7周

D、1-2周

Great efforts to increase grain production _____ if food shortages are to be avoided. [ ]

A. could be made

B. must be made

C. might be made

D. would be made

实施产品差别化策略，有利于摆脱价格战。

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