声波在传播途径上遇到尺寸相对较小的障板时，会产生下列哪种声现象?
A.扩散
B.衍射
C.干涉
D.反射
参考答案：B
Although he is a well-known star, he never gives others an impression that he is _________ those who play with him.
A．more inferior than
B．more superior than
C．inferior to
D．superior to
新建公路路基的干湿类型根据路基的（）来判别
A.分界相对含水量
B.分界稠度
C.相对含水量
D.临界高度
