1.The have some problems ____(travel) out.2.The mechanics need to keep______(work) on the car

相关推荐

• 1.The have some problems ____(travel) out.2.The mechanics need to keep______(work) on the car
• 1.The have some problems ____(travel) out.2.The mechanics need to keep______(work) on the car
• 已知a b c〉0,ab bc ca〉0,abc〉0,用反正法证明:a,b,c〉0
• a^3+b^3+c^3-3abc=(a+b+c)(a^2+b^2+c^2-ab-bc-ca)是怎么分解出来的啊?