【单选题】如果价格和工资短期中是固定的,在长期中是可变的话,那么( )。
C.
货币供应的变化,在短期会影响产出,但在长期并不影响产出
【单选题】某企业2015年流动资产平均余额为100万元,流动资产周转次数为7次。若2015年销售利润为210万元,则2015年销售利润率为( )。
【单选题】Eating ___ ford can help us keep in goof ___ . [ ]
【单选题】What can keep us healthy?
【单选题】However busy we are, we need to take exercise. Not only___________us keep healthy, it also stops us getting fat.
【单选题】Riding bicycles makes us ___________.
【简答题】Healthy Eating Healthy eating is important to us. What and how should we eat to be healthy? First, we must have enough food, never too much or too little. The food must be clean and we should cook it ...
【判断题】一般来讲,随着资产组合中资产数目的增加,资产组合的风险会逐渐降低,当资产的数目增加到一定程度时,组合风险降低到零。( )