在采购中可根据环境变化，对采购规格、数量及价格做灵活的调整，且有利于与供应商建立互惠

二、阅读理解

阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。

Not many years ago, a wealthy and rather strange old man named Johnson lived alone in a village in the south of England. He had made a lot of money in trading with foreign countries. When he was 75, he gave £12,000 to the village school to buy land and equipment for a children’s playground.

As a result of his kindness, many people came to visit him. Among them was a newspaperman. During their talk, Johnson remarked that he was 75 and expected to live to be 100, and the newspaperman asked him how he managed to be healthy at 75. Johnson had a sense of humor. He liked whisky and drank some each day. “I have an injection(注射)in my neck each evening”, he told the newspaperman, thinking of his evening glass of whisky.

The newspaperman did not understand what Johnson meant. In his newspaper he reported that Johnson was 75 and had a daily injection in his neck. Within a week Johnson received thousands of letters from all over Britain, asking him for the secret of his daily injection.

11．Johnson became a rich man through _____.

A．doing business     B．making whisky    C．cheating        D．buying and selling land

12．The gift of money to the school suggests that Johnson ____.

A．had no children         B．was a strange man 

C．was very warm-hearted and fond of children D．wanted people to know how rich he was

13．Many people wrote to Johnson probably to find out ____.

A．what kind of whisky he drank

B．how to live alone

C．how to become wealthy

D．in which part of the neck he had an injection each day

14．When Johnson said he had an injection in his neck each evening, he really meant that ____

A．he liked drinking a glass of whisky in the evening

B．he needed an injection in the neck

C．a daily injecting in the evening would make him sleep well

D．there was something wrong with his neck

15．From the passage we can infer that Johnson would be very ____ after he read those people’s letters.

A．miserable     B．glad           C．surprised     D．said

左室肥大，QRS波群电压增高，在各导联电压变化的标准是（）

A.RavL<1.1mV

B.RavR>0.5mV

C.RI>1.0mV

D.Rv5+SV1>4.0mV（男性）或>3.5mV（女性）

E.Rv1+Sv5>1.2mV

橡木桶的制造程序需要哪几步？

对新录用的人民警察实行试用期制度，试用期为( )。

A．2个月

B．6个月

C．1年

D．2年

从计量范围看，商业银行经济资本的风险资本组成部分有（）

A.信用风险资本

B.市场风险资本

C.流动性风险资本

D.操作风险风险