仕女诗
当学生做出我们所期待的良好行为后,我们发给数量相当的小红星、盖章的卡片等属于() ["行为塑造法","示范法","强化法","代币奖励法"]
DN100引酸管最多能引酸()立方米/小时。 ["60","0.1","20","10"]
对象专业化原则
请根据下列材料写一篇150词左右的英语短文。 At present, a wide variety of credit cards issued by major banks and shopping malls are thriving in colleges and universities across the nation, with a multitude of college students making up a growing population of card holders. If you are a college student, will you also use the credit card?
“生产成本”账户