铁、铜、铅三种金属分别制成质量相等的立方体,其体积最大的为 ,如分别制成体积相等的立方体,则质量最大的为 (已知ρ铁<ρ铜<ρ铅).
铁;铅
The old king decided to retire and the heavy load of responsibility to his three daughters.
A.give out
B.hand over
C.take over
D.block out
“仓庚于飞,熠耀其羽”中“仓庚”指的是()。
A、水鹳
B、黄鹂
C、大雁
D、乌鸦