膳食中B族维生素的来源
A.动物肝、肾、牛奶 B.粮谷类 C.绿叶类 D.酱菜类 E.干豆、花生
参考答案:B
Jane won't join us fordinner tonight and ____. [ ]
A. neither won't Tom
B.Tom won't either
C. Tom will too
D. so will Tom
灰浆泵水封环与盘根箱配合间隙为()mm。
A.0.05~0.1;
B.0.1~0.3;
C.0.3~0.5;
D.0.5~1。