30. The price the government pays for standard weapons purchased from military contractors is determined by a pricing method called “historical costing.” Historical costing allows contractors to protect their profits by adding a percentage increase, based on the current rate of inflation, to the previous year’s contractual price.
Which of the following statements, if true, is the best basis for a criticism of historical costing as an economically sound pricing method for military contracts? A. The government might continue to pay for past inefficient use of funds.为什么选这个呢?可以帮忙说下逻辑思路么? 我看不懂那个解释~~~请大家帮忙下~~
87. In tests for pironoma, a serious disease, a false positive result indicates that people have pironoma when, in fact, they do not; a false negative result indicates that people do not have pironoma when, in fact, they do. To detect pironoma most accurately, physicians should use the laboratory test that has the lowest proportion of false positive results.
Which of the following, if true, gives the most support to the recommendation above? (E) All laboratory tests to detect pironoma have the same proportion of false negative results.也是不明白为啥选这个