有一句广告语叫：“我不吃油炸食品！”某些高温油炸食品中含有一定量的（丙烯酰胺）。

箱形主梁变形的修理，就是设法使主梁恢复到所需要的上拱度，然后再使其稳定。

在高压下氮气会发生聚合得到高聚氮，这种高聚氮的N-N键的键能为160kJ•mol^-1（N₂的键能为942kJ•mol^-1），晶体片段结构如图所示．又发现利用N₂可制取出N₅、N₃．含N₅⁺离子的化合物及N₆₀、N₅极不稳定．则下列说法错误的是（　　）

A．按键型分类，该晶体中含有非极性共价键

B．含N₅⁺离子的化合物中既有离子键又有共价键

C．高聚氮与N₂、N₃、N₅、N₅⁺、N₆₀互为同素异形体

D．这种固体的可能潜在应用是烈性炸药或高能材料

流动人口？

The Secret of Success

Since 1989, Dave Thomas, who died at age 69, was one of the most recognizable faces on TV. He appeared more than 800 commercials for the hamburger chain named for his daughter. "As long as it works," he said in 1991 ,"I’11 continue to do those commercials. "

Even though he was successful, Thomas remained troubled by his childhood. "He still won’t let anyone see his feet, which are out of shape because he has never had proper-fitting shoes," Wendy said in 1993 and told us that sixty-one years ago, Dave Thomas was born to a single mother, he was adopted as a baby by Rex and Auleva. Thomas of Kalamazoo in Michigan when he was six weeks old. After Auleva died when he was 5,Thomas spent years on the road as Rex traveled around seeking construction work. " He fed me," Thomas said, "and if I got out of line, he’d beat me. " "When I found out I was (adopted), I didn’t want to talk about it, and as I talked to people I grew older... I got really a lot of encouragement. " When he was 12 years old, Thomas started working at a barbecue restaurant in Knoxville, Tenne. Moving out on his own at 15, Thomas worked, first as a waiter, in many restaurant. But he had something much better in mind. "I thought if I owned a restaurant," he said, "I could eat for free. " When he was 24, meeting with Harland Sanders led Thomas to a career as a manager of a Kentucky Fried Chicken restaurant that made him a millionaire in 1968.

A year later, after breaking with Sanders, Thomas started the first Wendy’s Old Fashioned Hamburgers, in Columbus, Ohio, which set itself apart by serving made-to-order burgers. With 6,000 restaurants worldwide, the chain now makes $ 6 billion a year in sales.

Although troubled by his own experience with an adoption, Thomas, married since 1954 to Lorraine, 66, and with four grown kids besides Wendy, felt it could offer a future for other children. He started the Dave Thomas Foundation for adoption in 1992. Later, Thomas, who had left school at 15, graduated from Coconut Great High School in Florida. He even took Lorraine to the graduation dance party. The kids voted him "Most likely to succeed" Thomas is survived by his wife of 47 years, Lorraine, five children and 16 grandchildren. His foundation helps raise awareness for the 134000 foster children available for adoption, and helps make adoption more affordable. "The Dave you saw on TV was the real Dave," said his friend Pat Williams. "He wasn’t a great actor or a great speaker. " He was just Joe Everybody.

The main events of Dave’s life

In (1) he was born to a single mother. 6 weeks old he (2) as a baby by Rex an Auleva Thomas. At the age of five Thomas spent years on the road as Rex traveled around (3) . In 1944 Thomas started working at (4) in Knoxville, Tenn. 15 years old he (5) on his own. In 1954 Thomas (6) Lorraine. In (7) he met with Harland Sanders. In 1968 he became a (8) In (9) Thomas started the first Wendy’s Old Fashioned Hamburgers, in Columbus. In 1993, graduated from Coconut Great High School in Florida. " The Dave you saw on TV was the real Dave," said his friend Pat Williams. "He wasn’t a great actor or a great speaker. " He was just Joe Everybody. And in 2001, Thomas (10) .

第（10）空应选择（）

什么叫灌桶损耗？如何计算？