调制化学膨松面团时,碳酸氢铵的用量一般不超过面粉用量的
A.1%
B.1.5%
C.2%
D.2.5%
参考答案:A
He makes ________ by selling clothes in the supermarket, so he lives _______.
A.a living; good life
B.living; a good life
C.a living; a good life
D.living; good life
疫苗可产生哪一类免疫()。
A.自然自动免疫
B.自然被动免疫
C.人工自动免疫
D.人工被动免疫
E.非特异性抵抗力