A:放块状固体
B:读液体体积
C:闻气体气味
D:给液体加热
正整数中各位数字的立方和与其本身相等的数称为自恋数.例如153,13+53+33=153,因此,153被称为自恋数,下列各数中为自恋数的是( )①370; ②407; ③371; ④546.
下列工具属于费力杠杆的是( )
—I do more exercise and eat _________ meat than I did last year.
—That's why you're getting thinner.