如何制备无酚蒸馏水？

下列关于经线的说法，正确的是[ ]

A．指示东西方向

B．都是圆

C．长度相等

D．与纬线斜交

     In most places children are banned from working. But at a theme park in Japan, boys and girls can

fight fires, catch thieves and also perform the more boring tasks of making hamburgers and delivering

parcels.

     Kidzania, in a shopping centre in Tokyo, is like a real town where children can act out their dreams

of future careers. The streets are lined with shops and even a bank. Everything inside is two-thirds normal

size to accommodate (容纳) the young workers. After their parents buy the ticket, children can try

several jobs.

     Being a firefighter is a dream of many children. Children are being trained in the fire station of the town. Suddenly an alarm bell rings and they put on firefighter clothes before running towards the scene. The

scene is created with lighting and fake smoke, but for children it is real enough. "Sometimes it's too hard

for them," says the worker Ryoko Ishikura. "Some kids are in tears when they hear the alarm and the

fire breaks out. But even with tears in their eyes they go on running and fight the fire bravely." 

     The idea for Kidzania started in Mexico. It arrived in Japan three years ago and there are also parks in Chile, Indonesia and Portugal. Another one is opening soon in Dubai.

     The children are rewarded for their efforts in "Kidzos", the theme park money. In most countries it is

quickly spent in shops and restaurants. But in Japan, children form long queues at the theme park's bank. "I'll keep it in the bank," said nine-year-old Noa Morita, who wants to be a fashion designer.

1. What do children mainly do in Kidzania?

A. They are trained to be volunteers.

B. They play roles in children’s movies.

C. They experience their future jobs.

D. They learn how to make and save money.

2. When children arrive at a fire scene in Kidzania, they        .

A. are frightened to run away

B. call the firefighters quickly

C. tried to put out the fire bravely

D. are trained to fight the fire

3. How did Noa Morita deal with her Kidzos?

A. She spent it quickly in shops.

B. She put it in the park’s bank.

C. She asked her parents to keep it for her.

D. She used it to pay for fashion courses.

4. What can we learn about Kidzania from the text?

A. The idea came from America.

B. Japan is the fourth country to build it.

C. Everything inside it is almost half normal size.

D. It looks like a real town with shops and a bank.

当电缆直径大于20mm时，弯曲半径应大于或等于电缆外径的（）倍。

A.3

B.5

C.7

D.9

下列各选项中，属于兑付支票要求的有（）。

A.持票人可以委托开户银行收款或直接向付款人提示付款，用于支取现金的支票仅限于收款人向付款人提示付款

B.持票人持用于转账的支票向付款人提示付款时，应在支票背面背书人签章栏签章，并将支票和填制的进账单交送出票人开户银行

C.收款人持用于支取现金的支票向付款人提示付款时，应在支票背面“收款人签章”处签章，持票人为个人的，还需交验本人身份证件，并在支票背面注明证件名称、号码及发证机关

D.持票人委托开户银行收款时，应作委托收款背书，在支票背面背书人签章栏签章，记载“委托收款”字样、背书日期，在被背书人栏记载开户银行名称，并将支票和填制的进账单送交开户银行

将淬火后的零件加热到某一温度，保温一定时间，然后在冷却剂中以一定的冷却速度进行冷却的热处理方法称为（）

A.淬火

B.回火

C.退火

D.正火