皮皮学，免费搜题
登录
搜题
【单选题】
膈肌呼吸训练时,吸气和呼气时间比较为恰当的是A.
2:1
B.
1:1
C.
1:2
D.
1:3
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Why is it no good trying to sell computer games to older people?
A.
Because computer games are harmful to older people.
B.
Because the market is rather small.
C.
Because there are not many older people in the society.
D.
Because many older people don't know how to use computers.
【简答题】Depression is regarded by many older people as_____________
【单选题】It is necessary for older people ______.
A.
to understand why young people are interested in making a better life
B.
to understand what young people think and feel
C.
to see what is wrong in their lives
【简答题】To be beneficial,exercise for older people should
【简答题】A ______ diet makes people look much older.
【单选题】某企业生产某种产品需要2个生产环节,第一个生产环节有设备4台,每台机器产能为30件/天,第二个环节有设备2台,每台机器产能为50件/天,则每天生产该产品的总生产能力为( )
A.
80
B.
100
C.
120
D.
220
【简答题】某企业生产某种产品需要4道加工工序,每道工序加工单件产品所耗用的时间分别是5min、3min、6min、4min,每次加工批量为10件。根据顺序移动方式、平行移动方式和平行顺序移动方式分别计算该企业加工该批零部件所耗用的生产时间。
【简答题】某企业生产某种产品需经过六道工序,为提高该产品质量,检查了一季度全部废品产生的原因,结果如下: 工序名称 废品数(件) 工序名称 废品数(件) A B C 2606 1024 355 D E F 59 28 25 合计 4097 试作出累计频率分布表,并对废品率控制提出建议。
【简答题】Older people are generally advised to _____. (A) keep fit by going in for physical activities (B) keep mentally active by challenging their brains (C) maintain mental alertness through specific traini...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
