若方程x2-3x+a=0的一个根是2,则a=______.
设方程的另一个根是b,
由根与系数的关系得:2+b=3,2b=a,
∴b=1,a=2,
故答案为:2.
This is the second time I ____ the Himalayas as a college student. [ ]
A. climb
B. had climbed
C. climbed
D. have climbed
进出口商品按照操作规程抽样检验代表全批商品品质的,其品质检验费按全批计收。 ( )