问题
单项选择题
在启动主机前最应注意的参数是（）。
A．冷却水压力
B．膨胀水柜水位
C．滑油压力
D．循环柜油位
答案
参考答案：C
解析：在起动主机前最应注意的参数是滑油压力不得低于最低数值，因为滑油压力过低，会使轴承磨损加快甚至烧瓦。
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在启动主机前最应注意的参数是（）。
A．冷却水压力
B．膨胀水柜水位
C．滑油压力
D．循环柜油位
参考答案：C
解析：在起动主机前最应注意的参数是滑油压力不得低于最低数值，因为滑油压力过低，会使轴承磨损加快甚至烧瓦。
No one else knew about the extra club in Zach Nash’s golf bag. It belonged to a friend, and Zach forgot it was there as he played his way to victory in a junior tournament（锦标赛）last summer in Wisconsin, US. The 14-year-old accepted his medal, celebrated with his grandparents who had come from a long way to watch. But when he stopped by his country club to share the news, a professional player noticed something wrong. “Count your clubs,” he told the teenager. Fifteen—one more than allowed. Zach’s eyes filled with tears. If Zach had just won a basketball championship or a soccer game and someone had discovered a violation after the win, it would not have mattered. It is nothing unusual for a soccer player to dive to the turf to draw fouls（假摔以使对方犯规）. Golf is different. In a win-at-all-costs world, the game holds itself to a higher standard. Golf isn’t a game where referees watch closely. In golf tournaments, dozens of competitors are spread across acres of land, so officials cannot hope to see each shot. Competitors call penalties（处罚）on themselves. “It was a sport for gentlemen, and gentlemen did not care about winning. They care about doing the right thing,” said Robert Simon, a golf coach at Hamilton College in New York. Honesty became a medal of honor. When one of the game’s early stars, Bobby Jones, was p  raised for calling a penalty on himself at the 1925 US Open, he replied: “You might as well praise a man for not robbing a bank.”So even the error had no effect on Zach’s final score—he has never used the extra club, the teenager packed up his medal and dropped it in the mail. “But this is golf, and rules are rules. I just knew what I had to do,” he said. Then came another tournament. Before teeing off(开球), Zach counted his clubs—four times. 小题1:What can we infer from the text?
 om the underlined sentence?
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