影响工业场地总体布置的主要因素有哪些？

阅读理解

     Don't_believe_all_of_the_stereotypes(模式化的形象)you_may_have_heard_about_Americans.Even the ones that are true in general may not be true about specific individuals or a large part of the population.For example,although Americans tend to be louder than people from other cultures(especially at athletic

events),many of the people you meet will be quiet and polite.Some people may be intolerant, but most will be pleasant and welcoming.Remember that American films and television exaggerate(夸张)in order to

generate excitement, and so present a rather false picture of what life in the United States is really like.

Therefore,tourists in the US are not always on their best behavior.

     Americans do tend to be more informal than people from other countries.It is common for Americans

to wear casual clothing to school and to greet professors by first name.However, good manners and

politeness are always appreciated.If you are polite, and dress a little more formally than your American

friends, it will not be poorly thought of.

     However,some businesses require their employees to wear a uniform or a suit.It would be improper to wear a Tshirt and blue jeans to a job interview.Some of the more prestigious restaurants require a coat and a tie.Americans tend to dress up for cultural events(the opera,theater and ballet)and to dress down for

athletic events.Formal wear is required at weddings and funerals, or any other event with religion.If you

rely on the stereotypes,you will likely put yourself into an embarrassing situation.

1. The underlined sentence probably means________.

A. some of the stereotypes you may have heard about Americans are not true

B. you should not believe the stereotypes you may have heard about Americans

C. none of the stereotypes you may have heard about Americans should be believed

D. none of the stereotypes you may have heard about Americans should not be believed

2.The passage is probably written for________.

A. businessmen  

B. visitors to America

C. American students  

D. American filmmakers

3.The second paragraph suggests that________.

A. most Americans are polite

B. people who are polite are welcome

C. casual clothing makes others uncomfortable

D. American students are impolite to their teachers

4. We can learn from the passage that________.

A. American films are mostly poor comedies

B. it is good manners to wear blue jeans to a wedding

C. Americans usually wear formal clothes in a theater

D. to dress formally makes others feel you are not easy

to get on with

在施工承包合同中约定，如果建设单位不按照约定支付工程款，经催告后在7天内还不支付的话，则承包商可以单方面解除合同，后来果然发生了建设单位不及时支付工程款事件，承包商催告后，建设单位在7天内依然没有支付，则下面说法正确的是（）。

A.此时承包商可以行使解除权

B.此时解除合同属协议解除

C.如果承包商不希望解除合同，合同依然有效

D.如果合同同时约定了解除权行使的期限，则期限届满后解除权消灭

E.此时如果承包商想要解除合同需要征得建设单位的同意

hallon 1211灭火剂的灭火机理是（）

若油罐泄漏严重可用（）补漏。

A、胶水粘结法

B、生漆刷涂法

C、焊修法

D、粘土填补法

为了维持流体的运动，必须消耗能量以克服内摩擦力造成的能量损失。( )