最大增溶浓度的正确表述是()
A.CMC
B.MAC
C.CAC
D.HLB
E.IPC
参考答案:B
She’s feeling ________ tired.
A.a bit
B.a bit of
C.lots of
D.a few
对图示体系作几何组成分析时,用三刚片组成规则进行分析。则三个刚片应是:()
A.△143,△325,基础
B.△143,△325,△465
C.△143,杆6-5,基础
D.△352,杆4-6,基础