建筑材料的物理性质中，材料的( )是指材料在饱和水作用下强度不显著降低的性质。
A．耐水性
B．吸水性
C．吸湿性
D．抗渗性
参考答案：A
Indian authorities have decided to remove the dry coconuts from trees near the building to ensure
Mr Obama will not become the _______ of falling coconuts.
A. witness
B. victim
C. criminal
D. consultant
变速器传动比越大，则输出扭矩()。
A.越小
B.越大
C.减小
D.过小
