对于箱形截面的凹陷铰折，不适当的校正会造成（）。

"Uncle Sam," is usually used to refer to the United States or the US government. It is the nickname of the country.It is hard to believe that this nickname became known quite by accident and there was a man  75   "Uncle Sam."However,not many people have ever heard of such a man.Not even most young Americans.

The man was called Uncle Sam Wilson.He was born in Arlington,Massachusetts, September 13, 1776. At the age of 14 Sam joined the American Revolutionary War(美国革命）, and   76    in the army under George Washington until the end of the war.He then moved to Troy, New York states, and began a meatpacking business. He earned a reputation（赢得了声誉）for being honest and hardworking. He was locally respected and admired, thus greeted as Uncle Sam.

One day in 1812,a group of visitors came to Sam's meatpacking plant(肉类加工厂）.Among them was Government official. He  77    the capitalized letters(大写字母） EAUS on the packages of meat and asked what they stood for. A worker man replied that EA stood for Elbert Anderson,the businessman for whom Sam was working.And he added   78  that US(actually it was the short form for United States) stood for Uncle Sam Wilson. Soon soldiers were saying all army supplies were from  "Uncle Sam".

In May 1813,this story appeared in a newspaper published in New York.Since Uncle Sam was an example of a hard-working man and a lover of America, the idea of"Uncle Sam" as the name of this kind of man became well-known rapidly.Uncle Sam was ready to help  79   and place the interest of the nation(国家利益）above all---this is in line with (与……符合）the American spirit. This makes the  American consider Uncle Sam   80  the symbol of the USA.In 1961 the US Congress made a decision that "Uncle Sam" is the America's national symbol.

小题1:

A．was

B．named

C．asked

D．was called小题2:

A．served

B．stayed

C．joined

D．entered小题3:

A．saw

B．observed

C．studied

D．noticed小题4:

A．Surprisingly

B．seriously

C．jokingly

D．carefully小题5:

A．other

B．others

C．everyone

D．another小题6:

A．to

B．for

C．like

D．as

博才书店销售某种初三复习资料，进价12元/本，售价20元/本．为了促销，书店决定凡是买10本以上的，每多买一本，售价就降低0.10元（例如：某人买20本，于是每本降价0.10×（20-10）=1元，就可以按19元/本的价格购买），但是最低价为16元/本．

（1）求顾客一次至少买多少本，才能以最低价购买？

（2）某顾客一次买了60本，专卖店共盈利多少元？

（3）一位顾客一次购买了x本（10＜x＜50），专卖店共获利润202.5元，请你求该顾客所购买的复习资料的数量．（参考数据45²=2025）

在创建主/子窗体之前，必须设置______之间的关系。

下列对土的冻胀类别的说法中正确的是( )。

A．冻胀类别应按土冻胀率的大小划分

B．冻胀类别应按冻结期间地下水位距冻结面的最小距离划分

C．冻胀类别应按冻前天然含水量大小划分

D．黏土中黏粒含量超过60%时为不冻胀土

采购信息中可能包括质量管理体系的要求。