直联商户和间联商户的扣率标准不一致的。()
参考答案:错
We’ll be free tomorrow,so I suggest ______ to the history museum.
A.to visit
B.visiting
C.we should visit
D.a visit
a,b,c成等比数列. (1)a=b=c; (2)ax2+2bx+c=0有相等的实根.