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【单选题】
Depending on whom you believe, the average American will, over a lifetime, wait in lines for two years (says national public radio) or five years ( according to some customer-loyalty experts). The crucial word is average, as wealthy Americans routinely avoid lines altogether. Once the most democratic of institutions, lines are rapidly becoming the exclusive province of suckers (people who still believe in and practice waiting in lines). Poor suckers, mostly. Airports resemble France before the Revolution: first-class passengers enjoy 'elite' security lines and priority boarding, and disembark before the unwashed in coach, held at bay by a flight attendant, are allowed to foul the Jet-way. At amusement parks, too, you can now buy your way out of line. This summer I haplessly watched kids use a $52 Gold Flash Pass to jump the lines at Six Flags New England, and similar systems are in use in most major American theme parks, from Universal Orlando to Walt Disney World, where the haves get to watch the have-mores breeze past on their way to their seats. Flash Pass teaches children a valuable lesson in real-world economics that the rich are more important than you, especially when it comes to waiting. An NBA player once said to me, with a bemused chuckle of disbelief, that when playing in Canada—get this—'We have to wait in the same customs line as everybody else. ' Almost every line can be breached for a price. In several U. S. cities this summer, early arrivers among the early adopters waiting to buy iPhones offered to sell their spots in the lines. On Craigslist, prospective iPhone purchasers offered to pay 'waiters' or 'placeholders' to wait in line for them outside Apple stores. Inevitably, some semi-populist politicians have seen the value of sort-of waiting in lines with the ordinary people. This summer Philadelphia mayor John Street waited outside an AT&T store from 3: 30 a.m. to 11:30 a.m. before a stand in from his office literally stood in for the mayor while he conducted official business. And billionaire New York mayor Michael Bloomberg often waits for the subway with his fellow citizens, though he's first driven by motorcade past the stop nearest his house to a station 22 blocks away, where the wait, or at least the ride, is shorter. As early as elementary school, we're told that jumping the line is an unethical act, which is why so many U.S. lawmakers have framed the immigration debate as a kind of fundamental sin of the school lunch line, Alabama Senator Richard Shelby, to cite just one legislator, said amnesty would allow illegal immigrants 'to cut in line ahead of millions of people. ' Nothing annoys a national lawmaker more than a person who will not wait in line, unless that line is in front of an elevator at the U. S. Capitol, where Senators and Representatives use private elevators, lest they have to queue with their constituents. But compromising the integrity of the line is not just antidemocratic, it's out-of-date. There was something about the orderly boarding of Noah's Ark, two by two, that seemed to restore not just civilization but civility during the Great Flood. How civil was your last flight? Southwest Airlines has first-come, first-served festival seating. But for $ 5 per flight, an unaffiliated company called BoardFirst. com will secure you a coveted 'A' boarding pass when that airline opens for online check-in 24 hours before departure. Thus, the savvy traveler doesn't even wait in line when he or she is online. Some cultures are not renowned for lining up. Then again, some cultures are too adept at lining up: a citizen of the former Soviet Union would join a queue just so he could get to the head of that queue and see what everyone was queuing for. And then there is the U. S. , where society seems to be cleaving int
A.
Lines are symbolic of America's democracy.
B.
Lines still give Americans equal opportunities.
C.
Lines are now for ordinary Americans only.
D.
Lines are for people with democratic spirit only.
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举一反三
【单选题】汽车上1.6L中英文字母L的含义指的是?
A.
排量
B.
发动机型号
C.
涡轮增压
D.
加长型汽车
【单选题】以下哪项不是薄荷的功效?
A.
疏散风热
B.
清利头目
C.
清泻肝火
D.
宣散透疹
E.
调达肝气
【简答题】在润滑良好的条件下,为提高蜗杆传动的效率,应_______蜗杆头数。
【单选题】为了提高蜗杆传动的啮合效率η,在良好的润滑条件下,可采用()。
A.
单头蜗杆
B.
多头蜗杆
C.
较高的转速
D.
大直径系数蜗杆
【简答题】在润滑良好的条件下,为提高蜗杆传动的效率,应采用________蜗杆。
【单选题】为了提高蜗杆传动的效率,在良好的润滑条件下,最有效的措施是 _ _ _ _ _ 。
A.
采用单头蜗杆
B.
采用多头蜗杆
C.
采用大直径系数的蜗杆
D.
提高蜗杆的转数
【单选题】汽车上1.6L中英文字母L的含义指的是( )
A.
加长型汽车
B.
排量
C.
涡轮增压
D.
发动机型号
【判断题】为了提高蜗杆传动的效率,在润滑良好的条件下,最有效的方法是增大直径系数q
A.
正确
B.
错误
【单选题】汽车上1.6L中英文字母L的含义指?
A.
排量单位
B.
发动机排列方式
C.
发动机型号
D.
加长型汽车
【单选题】为了提高蜗杆传动的效率,在润滑良好的条件下,最有效的是采用()。
A.
单头蜗杆
B.
多头蜗杆
C.
大直径系数的蜗杆
D.
提高蜗杆转速
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