有关工业品的采购网格模型，以下哪一条是正确的？（）
A.该模型是由采购任务的3种类型和决策过程的6个阶段交叉合成的
B.其中的3种采购类型为首次采购、调整后的重购和直接重购
C.无论其采购任务属于哪一种类型，采购方需要历经所有8个阶段的决策过程
D.其中的3种采购类型为二次采购、调整后的重购和重复采购
E.一旦采购方决定直接重购后，供应商即成为“圈外供应商”
参考答案：B
| The field of medicine has always attracted its share of quacks and charlatans — disrepu-table women and men with little or no medical knowledge who promise quick cures at cheap prices. The reasons why quackery thrives even in modem times are easy to find. To begin with, pain seems to be a chronic human condition. A person whose body or mind "hurts" will often pay any amount of money for the promise of relief. Second, even the best medical treatment cannot cure all the ills that beset men and women. People who mistrust or dislike the truths that their physicians tell them often turn to more sympathetic ears. Many people lack the training necessary to evaluate medical claims. Given the choice between (a) a reputable physician who says a cure for cancer will be long, expensive and may not work at all, and (b) a salesperson who says that several bottles of a secret formula "snake oil" will cure not only cancer but tuberculosis as well, some individuals will opt for "snake oil". Many "snake oil" remedies are highly laced with alcohol or narcotic drugs. Anyone who drinks them may get so drunk or stoned that they drown their pains in the rising tide of pleasant intoxication. Little wonder that "snake oil" is a popular cure-all for minor aches and hurts! But let there be no misunderstandings. A very few "home remedies" actually work. However, most remedies sold by quacks are not only useless, but often can be harmful as well. |
In this passage, a quack or a charlatan is someone who______.
A．has a special ability
B．has little knowledge
C．is not a good doctor
D．pretends to be a doctor