主页
学科
搜索
账户
常见问题
当前学科：737NG机型
题目：
单选
飞行操纵A电门下方的”低压灯”亮后，如果将该电门放到”备用方向舵（STBY RUD）”位，该”低压”灯将：（）.
答案：
<查看本题扣1积分>
查看答案
答案不对？请尝试站内搜索
推荐知识点:
关于损失补偿原则的补偿限制描述的错误的是()。
塑性材料在断裂时()残余变形发生。
下列哪项不能作为风热犯肺型喘证的诊断依据（）。?
与乙肝疫苗成分一致的是（）。
在水平巷道或倾角在（）以下的井巷中，电缆应用吊钩悬挂占
党的纪律审查是政治性极强的工作，必须时时刻刻绷紧﹍﹍这根弦。（）
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。
矿井火灾事故中大部分遇难人员是（）死亡。
γ射线安全距离的计算公式是下列哪个？（）（式中：R-离射源的距离（m）；t-照射时间（h）；m-射源强度（毫克镭当量））
无菌装配的环境洁净度要求是（）