Eating a lot of fresh vegetables _____ good for my health.[ ]
A. is
B. am
C. are
D. has
答案:A
08-475道岔捣固车的发动机输出功率为350KW。
70℃时,100g饱和NH4Cl溶液中含有NH4Cl 37.5g。则该温度时NH4Cl的溶解度为 ____________g/100g水,若将此溶液稀释到25%,需加水__________g。