200的5%的5%是()。
A.50
B.5
C.0.5
D.2
参考答案:C
解析:
200×5%×5%=200××=0.5。故选C。
One of a layer's tasks is to _____ legal guidance to people in need but a certain _____ of fee is charged. [ ]
A. supply;number
B. provide;deal
C. askfor;amount
D. offer;amount
用旱船滑移法运输一台4t的设备,旱船在地面上滑移,需用多大的水平拖拉力? (钢板与路面的滑动摩擦系数μ=1.5)