【判断题】两个互斥方案进行比较,内部收益率大的方案优。( )
【单选题】___________ all my family,1 sincerely thank you for what you have done for us. [ ]
【单选题】I'd like to give them something _____ everything they've done for us. [ ]
【判断题】尖嘴钳主要用来夹小螺钉帽,绞合硬钢线,在焊接点上网绕导线、网绕元器件的引线,或用于布线,其尖口作剪断导线之用,还可用作元器件引脚成型。