In order to succeed in a business, the entrepreneur should ______.
A.get very well prepared for his new business
B.choose a business he's already familiar with
C.examine the company's crucial signs now and then
D.invest as much as possible into his enterprise
第1题
第三期牙本质或反应性牙本质又称为
A.管周牙本质
B.原发性牙本质
C.球间牙本质
D.修复性牙本质
E.前期牙本质
第10题
本质上是一种牙本质增龄性改变而形成的牙本质称为
A.原发性牙本质
B.前期牙本质
C.继发性牙本质
D.修复性牙本质
E.前期牙本质
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