微波加热可以在食品内部直接加热,因此其加热时间短,尤其适于金属包装食品的加热。
参考答案:错
有4个不同的小球,4个不同的盒子,把小球全部放入盒内.
(1)恰有1个盒内有2个小球,有多少种不同放法?
(2)恰有两个盒内不放小球,有多少种不同放法?
If an analyst adjusts the financial statements and capitalizes an operating lease the analyst will observe that the:()
A. current ratio will increase.
B. times interest earned ratio will decrease.
C. acid test ratio will increase.