荷兰的鲜花装点着世界许多城市,使鲜花市场扩大的区位因素是()
A.气候
B.交通运输和保险冷藏技术
C.政策
D.科技
参考答案:B
The problem referred to at the class meeting, if ______________ in time, will make a bad effect on everyone in our class.
A.not dealt with
B.not to deal with
C.not being dealt with
D.not dealing with
固定桥的咬合力主要是通过哪个部分传递到颌骨上
A.固位体
B.桥体
C.连接体
D.基牙
E.黏膜