发酵酒又称原汁酒或酿造酒，是在含有糖分的原料中加入酵母进行提纯而得到的酒精饮料。
1、正确2、错误According to the data in Figure 3, what effect, if any,did removing the herbaceous layer have on the percent distribution among the 1-year-old seedlings in the 1-hectare area of the forest？ The removal of the herbaceous layer:
A.changed the percent for the northern red oak only.
B.changed the percent for the red maple and the percent for the white pine only.
C.changed the percent for each of the 5 tree species.
D.did not change the percent for any of the 5 tree species.
A主动型
B被动型
C强制型
D参与型
E合作型
使用半自动压力式咖啡机制作咖啡时，粉锤压粉的力度会影响咖啡品质
1、正确2、错误A两个样本率的分子和分母
B两个构成比的分子和分母
C两对实测阳性和阴性人数
D一组绝对数和一组理论数
E四个样本率或四个构成比