— No one wants to make friends with me. I feel myself _________ in the class.
— Don't worry. You can say hello to your classmates bravely.
A:out of order
B:out of place
C:out of date
在探究串联电路电压关系实验中,物理实验小组按如图所示的电路测得V的示数是3.8V,V1的示数是2.3V,V2的示数应为( )
对正整数n,记n!=1×2×3×…×n,则1!+2!+3!+…+10!的末尾数为( )