搜题请搜索小程序“爱下问搜题”
问题 单项选择题

项目的范围将会变更如果（）

A.项目经理提供了没有设计概念的成本评估

B.低估了工作产生的结果

C.项目经理在项目已经被定义，成本和进度已经被批准后被指派

D.以上都是

答案

参考答案：D

解析：没有计划概念，将使项目经理无法把握项目的需求；低估工作结果和滞后指派项目经理，使项目的工作范围可能被低估

单项选择题

A


"In only six clays I lost seven pounds of weight. "
"Two full inches in the first three days!"
These are the kinds of statements used in magazine, newspaper, radio and television ads. , promising new shapes and new looks to those who buy the medicine or the device. The promoters of products say they can shape the legs, slim the face, smooth wrinkles, or in some other ways to add to beauty or desirability.
Often such products are nothing more than money-making things for their promoters. The results they produce are questionable, and some are dangerous to health.
To understand how these products can be legally promoted to the public, it is necessary to understand something of the laws covering their regulation. If the product is a drug, FDA (Food and Drug Administration)can require proof (证明) under the Food, Drug, and Cosmetic Act that is safe and effective before it is put on the market. But if the product is a device, FDA has no authority to require pre-marketing proof of safety or effectiveness. If a product already on the marker is a danger to health, FDA can request the producer or distributor to remove it from the market voluntarily, or it can take legal action, including seizure (查封) of the product.
One notable case a few years ago involved an electrical device called the Relaxacisor, which had been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the body through contact pads. FDA took legal action against the distributor to stop the sale of the device on the grounds that it was dangerous to health and life.
Obviously, most of the devices on the market have never been the subject of court proceedings (法律诉讼), and new devices appear continually. Before buying, it is up to the consumer to judge the safety or effectiveness of such items.

It can be inferred that ads. mentioned in the text are ______.

A．objective

B．costly

C．unreliable

D．illegal
查看答案
填空题

一个圆锥的体积是24m3，与它等底等高的圆柱的体积是______．
查看答案