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证券市场的参与者包括（）。
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所谓幕表剧，就是指只有故事大纲，依据故事大纲排定一个（），有的附上重要的对话，而其余部分则依靠演员的临场发挥。
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排风2电空阀可以排出（）的压力空气。
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食品安全管理体系文件审核的作用（）
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近年来，看病难、看病贵的问题日益突出。由于看病难和贵，不少人有病不敢进医院。“小病拖、大病挨，要死才往医院抬”的现象比较普遍。请问你怎么看待这一现象？
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爱特曼(Ahman)的Z-score模型是首先使用多元线性判别的信用风险模型。以下对Z-score模型评价不正确的是( )。A．Z-score模型的主要计算数据是企业的财务比率B．Z-score模型中有5个变量C．Z-score模型简单，成本低，效果佳D．Z-score已被广泛应用于美国的商业银行中，同样也完全适用于中国金融市场
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关于心脏血液供应的描述，错误的是（）。
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塑件最小脱模斜度与塑料性能.收缩大小.塑件的（）等因素有关。
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桑树枝条中（）的几个侧芽在萌发后，长出几片叶子即止心的，在栽培时叫做止心芽。
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根据材料，完成题。 Fitness Movement The fitness movement that began in the late 1960s and early 1970s centered around aerobic exercise.Millions of individuals became engaged in a variety of aerobic activities, and51thousands of health spas developed around the country to capitalize on his52interest in fitness, particularly aerobic dancing for females. A number of fitness spas existed53to this aerobic fitness movement, even a national chain with spas in most major cities. However, their54was not on aerobics, but rather on weight-training programsdesigned to develop muscular mass, 55, and endurance in their primarily male56. These fitness spas did not seem to benefit57from the aerobic fitness movement to better health, since medical opinion suggested that weight-training programs58few, if any, health benefits. In recent years, however, weight training has again become increasingly. 59for males and for females. Many60programs focus not only on developing muscular strength and endurance but on aerobic fitness as well.61, most physical fitness tests have usually included measures of muscular strength and endurance, not for health related reasons, butprimarily62such fitness components have been related to performance in athletics.63, in recent years,evidence has shown that training programs designed primarily to improve muscular strength and endurance might also offer some health64as well. The American College of Sports Medicine now65that weight training be part of a total fitness program for healthy Americans.请在第__(51)__处填上正确答案。