若关于x方程kx2–6x+1=0有两个实数根，则k的取值范围是 .
k≤9且k≠0
解：由题意得，，解得k≤9且k≠0。
以下关于网上银行银期转账“入金”交易的说法正确的有（）。
A、交易提交成功后扣减客户的借记卡账户资金。
B、交易提交成功后调增客户的借记卡账户资金。
C、交易提交成功后扣减期货公司系统该客户期货资金账户资金。
D、交易提交成功后调增期货公司系统该客户期货资金账户资金。
— I don't really like Lily. Why did you invite her?
— Don't worry. She come. She said he wasn't certain what her plans were.[ ]
A. must not
B. need not
C. would not
D. might not
，解得k≤9且k≠0。
，解得k≤9且k≠0。