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Practice 2 Henry Ford did not invent the automobile, but he was the first man to mass-produce it, and this made it available to the ordinary man. Many automobiles were being built by the hand at the turn of the century and were much too expensive for all but the wealthy. In 1903 Henry Ford's first mass-produced Model T cars cost $850. By the early 1920s he was able to reduce the price, to $350. Between 1903 and 1927 Ford manufactured 15 million Model T Fords and earned a profit of $700 million. In 1927 he produced his sedan Model A, which was much more comfortable than the open, windswept Model T. Henry Ford was himself a born mechanic and could build a car with his own hands. So he respected his workers and treated them well. In 1914, when the basic wage for an industrial worker in Detroit was $11 a week, Ford announced that he would pay his Workers $5 a day. Ford believed in the dignity of work, and did not wish his men to become underpaid robots. He also built them a special town on the outskirts of the city.
马克思认为，私有财产是自由的客观保证。
供应商一般来讲可以分为（）。
机车的蛇行运动可分为（）、转向架蛇行和轮对蛇行。
各种扫描程序都属于（）
下列预防计算机病毒的方法中不当的是（ ）。
在放电过程中，电解液相对密度是升高的。
英国一项研究发现，人只要在每餐饭前半小时喝一杯500毫升的水，并坚持3个月，体重就能减轻2至4公斤，研究团队邀请了84位超重的成人，随机分成2租，其中41位被要求在餐前喝500毫升水，另外43位则照常生活，3个月后，团队发现三餐前喝水的人，平均体重下降了4.3公斤：而餐前没喝水的人，平均体重只下降了0.81公斤，研究人员说。没有喝水的那组人，“平均运动量”比餐前饮水的人更高，这说明餐前喝适当的水真能减肥。 下列哪项如果为真，最能支持上述结论？
胆结石术后，取半卧位的目的是（ ）
急性胰腺炎发病12小时以内，诊断意义较大的检查项目是（）
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