对二价离子,在25℃时电极的斜率为29.6mV。( )
参考答案:对
阅读下列材料,从所给的五个选项(A、B、C、D、E )中,选出符合各小题要求的最佳选项。Jim 的几位朋友想买汽车,请仔细阅读题,选出符合各自要求的最佳选项。
小题1:Dennis is a successful businessman. He has a big family. He wants to buy a car made in Europe. The car should be safe.
小题2:Gary has a big company, but he doesn’t like to show off. He likes a popular car of about 200,000 yuan. The car should have good quality and be big enough.
小题3:Arthur likes travelling and playing sports. He likes playing sports. He likes driving to the mountains to spend weeks with his friends.
小题4:Andy is a rich young man. He likes driving fast. He wants to buy a famous and fashionable car.
小题5:Cindy is a beautiful young lady. She has just found a job. She wants to buy a cute car.
酷热情况下,海上求生人员必须尽力减少身体对淡水的需要量。()