病菌进入胸膜腔的途径为A.直接由化脓病灶侵入或破入胸膜腔B.外伤或手术污染胸膜腔C.

题型:单项选择题

问题:

病菌进入胸膜腔的途径为

A.直接由化脓病灶侵入或破入胸膜腔
B.外伤或手术污染胸膜腔
C.经淋巴途径
D.血源性播散
E.以上都是

考点:护理正副高心胸外科病人的护理心胸外科病人的护理1
题型:单项选择题

一枚火箭由地面竖直向上发射,其速度-时间图象如图所示,其中0~ta等于ta~tb等于tb~tc。由图象可知

[ ]

A.0~ta段火箭的加速度小于ta~tb段火箭的加速度

B.在0~tb段火箭是上升的,在tb~tc段火箭是下落的

C.tb时刻火箭离地面最远

D.tc时刻火箭回到地面

题型:单项选择题

通讯自动交换设备维修接线器、继电器调整只准使用专用工具,()季不准用手触摸继电器。

题型:单项选择题

阅读理解

     It was the summer of 1965. Deluca, then 17, visited Peter Buck, a family friend. Buck asked Deluca

about his plan for the future. "I'm going to college, but I need a way to pay for it, " Deluca recalls saying. "Buck said, 'you should open a sandwich shop.'"

     That afternoon, they agreed to be partners. And they set a goal: to open 32 stores in ten years. After

doing some research, Buck wrote a check for $1,000. Deluca rented a storefront (店面) in Connecticut,

and when they couldn't cover their startup costs, Buck kicked in another $1,000.

      But business didn't go smoothly as they expected. Deluca says, "After six months, we were doing

poorly, but we didn't know how badly, because we didn't have any financial controls." All he and Buck

knew was that their sales were lower than their costs.

      Deluca was managing the store and to the University of Bridgeport at the same time. Buck was

working at his day job as a nuclear physicist in New York. They'd meet Monday evenings and brainstorm

ideas for keeping the business running. "We convinced ourselves to open a second store. We figured we

could tell the public, 'We are so successful; we are opening a second store.'" And they did-in the spring

of 1966. Still, it was a lot of learning by trial and error.

     But the partners' learnasyougo approach turned out to be their greatest strength. Every Friday,

Deluca would drive around and handdeliver the checks to pay their supplies. "It probably took me two

and a half hours and it wasn't necessary but as a result, the suppliers got to know me very well, and the

personal relationships established really helped out, " Deluca says.

      And having a goal was also important. "There are so many problems that can get you down. You

just have to keep working toward your goal, " Deluca adds.

     Deluca ended up founding Subways Sandwich, the multimilliondollar restaurant chain.

1. Deluca opened the first sandwich shop in order to ________.

A. support his family

B. pay for his college education

C. help his partner expand business

D. do some research

2. Which of the following is true of Buck?

A. He put money into the sandwich business.

B.He was a professor of business administration.

C. He was studying at the University of Bridgeport.

D. He rented a storefront for Deluca.

3. What can we learn about their first shop?

A. It stood at an unfavorable place.

B. It lowered the prices to poor management.

C. It made no profits due to poor management.

D. It lacked control over the quality of sandwich.

4. They decided to open a second store because they ________.

A. had enough money to do it

B. had succeeded in their business

C. wished to meet the increasing demand of customers

D. wanted to make believe(假装)that they were successful

5. What contributes most to their success according to the author?

A. Learning by trial and error.

B. Making friends with supplies.

C. Finding a good partner.

D. Opening chain stores.

题型:单项选择题

在融资信用保证结构设计及评价应考虑的因素中,不包括()。

A.A

B.B

C.C

D.D

题型:单项选择题

小明在学校参加植树活动时,使用如图所示的钢丝钳,剪铁丝固定小树苗。

(1)他使用的钳子是省力杠杆还是费力杠杆?

(2)在图中画出动力F1的力臂L1和作用在这根杠杆上的阻力F2

(3)剪铁丝时动力臂长为10cm,阻力臂长为2cm,若铁丝被剪断需要1000N的力,小明至少用多大的力才能将铁丝剪断?

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