【单选题】The body needs time to rest and recover .
【简答题】ASEA-SKF炉用钢包外壳由( )钢板构成,这样可以防止钢包外壳在交变磁场的作用下产生感应电流而发热。
【单选题】对于二分制的研究工具,即回答“是”或“否”,“正确”或“错误”的研究工具,在计算其信度时,最适用的信度类型是
【单选题】对于二分制的研究工具,即回答“是”或“否”、“正确”或“错误”的研究工具,在计算其信度时,最适用的信度类型是
【单选题】After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recovers from the activities of the previous day. The rest that you get while ...
【单选题】如果垄断竞争的行业存在经济利润,那么( )
【简答题】某企业有甲、乙两个投资项目,计划投资额均为1000万元,要求:(1)计算甲乙两个项目收益率的期望值分别为____、____。(2)计算甲乙两个项目收益率的标准离差分别为____、____。(3)甲投资项目风险____于乙项目风险。(大、小)。(4)如果无风险收益率为5%,甲项目的风险价值系数为10%,计算甲项目投资的必要收益率____。
【单选题】You shouldnât exercise right after eating because your body needs time to digest the food.
A.
Before you exercise, you should let your body process the food you eat.
B.
If you exercise right after eating, you'll get sick.
C.
You should eat slowly after you exercise.
【单选题】The body needs time to rest and recover .