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计算题:在液浸探伤中,为在钢工件中获得40°的折射横波,探头应倾斜多少度(水Cl=1

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计算题:在液浸探伤中,为在钢工件中获得40°的折射横波,探头应倾斜多少度(水Cl=1500m/s、钢Cl=5900m/s、钢Cs=3200m/s)

答案:

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阅读短文,并按照题目要求用英语回答问题。

     Big storms. High waves. Technical failures. Loneliness. After battling hard times and danger for over

nine months, British teenager Mike Perham made history last month as the youngest person to sail solo

(单独) around the world.

     The 17yearold made the record after he cleared the Panama Canal (巴拿马运河) and then sailed

through the Caribbean and home across the Atlantic.

     Mike is only three months younger than Zac Sunderland, the 17yearold American boy who had taken

the crown as the youngest solo aroundtheworld sailor in July.

     The two youngsters met in Cape Town in South Africa as they crossed the globe in different

directions. Mike insisted they were not rival (竞争对手). "No. It's two teenagers going out there, living

their dream and having the adventure of a lifetime," he said.

   Mike may be young, but he is no stranger to sailing adventures. He picked up the hobby at age 6 when

his father took him out in a small boat on a local lake. Father and son sailed separate boats across the

Atlantic when Mike was 14, making him the youngest person to cross that ocean solo. That record gave

him the taste for this even greater challenge.

   On the recent journey, the scariest moment for Mike came when his sailboat was hit by storms in the

southern Indian Ocean.

   "We were picked up by what felt like a 60foot wave and threw down on our side at 90 degrees," he

said.

   "It felt like I was going right over. Stuff was flying around and I just thought'Oh no'. "

   At other times, he had to dive into the Pacific and fix problems. He tied himself to the boat, jumped

into the water and went to work with a knife in 30second dives underneath (在……之下) the boat to

cut a rope away.

   Mike said he felt proud that he made his dream come true. "You've got to have confidence in yourself

that you will make it," he said.

1. What's the main idea of the passage?(No more than 15 words)

________________________________________________________________________

2. Which canal did Mike Perham cross? (No more than 3 words)

________________________________________________________________________

3. What does the underlined word "taste" in the fifth paragraph mean? (1 word)

________________________________________________________________________

4. What did Mike believe in? (No more than 10 words)

________________________________________________________________________

5. What do you think of Mike Perham? (No more than 10 words)

____________________________________________________________________

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