80-20规则是谁提出来的()
A.戴明
B.克劳斯比
C.朱兰
D.帕累托
参考答案:D
下列属于强电解质的是
①NaOH;②NH3·H2O;③CaCO3;④CH3COOH;⑤NaHCO3;⑥Al(OH)3;⑦NH4Cl;⑧CO2;⑨CH3CH2OH(乙醇);⑩Cu
A.①③⑥⑦
B.②④⑥⑦
C.①③⑤⑦
D.除⑧⑨⑩外
Jenny likes the rain, ____________ she doesn't like to get wet. [ ]
A. but
B. and
C. so