配制磁悬液时,每升液体中的磁粉含量叫做磁悬液的()。 A.极限 B.浓度 C

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问题:

配制磁悬液时,每升液体中的磁粉含量叫做磁悬液的()。

A.极限

B.浓度

C.磁粉数目

D.稠度

考点:钢轨探伤工高级钢轨探伤工高级钢轨探伤工题库
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如图所示,电阻箱的示数是     Ω,荧光灯工作时的电流约为150mA,合      A;家庭电路的电压为      V。

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水牛,严重持续腹泻,粪便水样,混有气泡,渐进性消瘦;皮肤发红,被毛粗糙、竖立、褪色,眼周最为明显。

病区放牧牛群预防本病可采用的方法是()

A、补饲高碳水化合物饲料

B、补饲高蛋白饲料

C、补饲高脂肪饲料

D、补饲高钙饲料

E、补饲含铜饲料

题型:单项选择题

阅读理解。

     Oleksander Pylyshenko is either very fearless,very foolish… or both. The 40-year-old zookeeper

from the Ukraine recently spent five weeks in a cage with Katya, a 200-kilo African lioness. Why? Well

for a start, he wanted to raise awareness of the treatment of animals in captivity. Secondly, he hoped to

break the Guinness World Record for time spent living in a cage with a lion. And thirdly? "I wanted to

show my children what kind of man I am," said Oleksander.

     For 36 days, Oleksander and Katya shared the cage together. They ate hunks of meat thrown into

the cage by Oleksander's wife, and slept side by side on a bed of hay. Oleksander did have a few more

creature comforts than his feline flatmate - he built himself a shower and toilet inside the enclosure. But he

didn't use any soap as the sharp scent is upsetting to lions.

     And as if living with the king of the jungle wasn't dangerous enough, Katya was also pregnant at the

time. She gave birth during Oleksander's stay. Wild animals are very protective of their young but the

zookeeper said Katya trusted him completely. Oleksander' wife, Olena, was also very trusting. "when he

first told me about the plan I was very scared. But I decided to support my husband."

     Once the five weeks was up, Oleksander stepped out of the cage and declared the experiment a

success. He told a Russian news agency, "Katya taught me a lot about honesty and kindness." Also, a

representative from Guinness World Records confirmed that Oleksander ahd beaten the previous record

by three weeks.

     But the parting was also bittersweet. "Katya was very sad to see me go," Oleksander noted. Oleksander's wife, on the other hand, was very happy to have her husband back.

1. Which is not the purpose of spending 5 weeks in cage with a lion according to Oleksander?

A. He wanted to raise awareness of the treatment of animals in cage.

B. He hoped to break the Guinness World Record for time spent living in a cage with a lion.

C. He wanted to show his children his kindness as a man.

D. He wanted to earn money by taking the risk of living with a lion.

2. What did Oleksander do in order to live more comfortably in the cage with a lion?

A. He made a bed with soft pillow and warm quilt.

B. He equipped the enclosure with modern facilities, for example, a computer.

C. He put up a tent to protect himself from sun and rain.

D. He himself built a shower and toilet inside the enclosure.

3. Why didn't he use any soap when he took the shower?

A. He didn't use any soap for fear of annoying the lion.

B. He didn't have any access to soap.

C. He didn't like the smell of soap.

D. Soap was forbidden in the zoo.

4. What's Oleksander's wife's attitude toward his stay with a lion in a cage?

A. indifferent    

B. objective      

C. opposed      

D. supportive

5. Oleksander spent ________ more weeks than the previous record.

A. one    

B. two      

C. three      

D. four

题型:单项选择题

关于H=F×b/a=F×(M-1)叙述.错误的是().

A.H表示半影模糊

B.F表示焦点大小

C.b表示焦一肢距

D.M表示放大率

E.M=1+0.2/F

题型:单项选择题

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