如图所示,鱼、肉的新鲜度不同,其浸出液PH会发生相应变化。鱼、肉的浸出液PH变大,其新鲜度的变化情况为( )
A:越来越新鲜
B:趋向腐败变质
C:没有发生变化
D:无法判断
⑴甲速为每秒4米;
⑵乙速为每秒5米;
⑶a=8;
⑷b=100;
⑸c=125.
下列运算正确的是( )
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