采用时间继电器配合控制是解决触头“竞争”和“冒险”的一个方法。

题型:判断题

问题:

采用时间继电器配合控制是解决触头“竞争”和“冒险”的一个方法。

考点:动力与电气工程电机与电气控制技术电机与电气控制技术题库
题型:判断题

下列哪项不是焊媒的作用 ()

A.消除焊件表面的氧化物

B.消除焊料表面的氧化物

C.保护焊接区在焊接过程中不被氧化

D.连接焊件之间的物质

E.改善熔化后的焊料对焊件表面的润湿性

题型:判断题

— __________ apples do you want?

— Four.[ ]

A. How many                     

B. How old                     

C. How much

题型:判断题

WASHINGTON—US President Barack Obama said Thursday that he had known about NBA star Jeremy Lin’s talent long before the“Linsanity”phenomenon swept the sport.

“I knew about Jeremy before you did because Arne Duncan, my secretary of education, was captain of the Harvard team,”Obama told the famous US sportswriter Bill Simmons in an interview.

“When Arne and I were playing, he said,‘I’m telling you, we’ve got this terrific guard named Jeremy Lin at Harvard.’And then when one of my best friends, whose son is a freshman at Harvard, went for a recruiting(招募) trip he saw Lin in action, so I’ve been on the Jeremy Lin bandwagon(时尚) for a while,”said the president, who is a Harvard Law graduate.

Lin, the New York Knicks’ point guard, though he was cut twice in December 2011, had had a sudden rise in the past month to high points scoring stardom in Madison Square Garden, the world’s biggest basketball stage.

He is the first Chinese-American player in the NBA. He has already developed a devoted following among many Asian-Americans and in China, Taiwan, the Philippines and other countries.

Clicks to the NYKnicks. Com website surged as basketball fans from around the world search for Lin’s news and highlights.

“He seems like a wonderful young man. It elevates(提升) this great sport all round the world,”said Obama, a Chicago Bulls fan.“And what’s been encouraging is to see how fast the sport has bounced back(恢复) recently.”But he sounded a note of caution on how much basketball costs to watch.

“It’s really important for professional athletes and sports owners to just remember you got a whole bunch of folks out here, all across the country, who invest so much in their teams. All they ask is not to be so selfish that you’re not looking out for your fans,”Obama said.

小题1:President Obama learned about Jeremy long before through      .

A.news reports

B.a friend

C.Bill Simmons

D.Arne Duncan小题2:The underlined word“surged”in Paragraph 6 probably means     .

A.moved suddenly and quickly

B.stopped gradually

C.moved slowly

D.suddenly broke down小题3:President Obama finds it encouraging that      .

A.Chicago Bulls is playing wonderfully

B.Jeremy Lin is becoming more popular

C.NBA matches have returned to normal

D.audience is concerned about basketball小题4:Both athletes and sports owners should care about folks because      .

A.they have made contributions to charities

B.all teams are in need of support from fans

C.they pay to watch their favorite teams play

D.they can decide the result of a game

题型:判断题

高压开关送电,先合开断路器,再合隔离开关。()

题型:判断题

患者,女80岁,结肠癌,在硬膜外阻滞下行左半结肠切除.麻醉前BP150/100mmHg,P84次/分,轻度贫血,心电示ST段改变,不正常心电图。T12、L1穿刺向骶端置导管4cm,首次注1.3%利多卡因、0.2%丁卡因和1:400000肾上腺素混合液4ml,5分钟后平面为T7~L1,血压降至110/90mmHg,追加药液.8ml,5分钟后,BP降至60/30mmHg,脉搏细弱,呼吸困难。

该患血压下降、呼吸困难的原因()

A.急性肺水肿

B.缺氧

C.局麻药过敏

D.药液偏多、麻醉平面过宽

E.贫血

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