经济订货量是指()。
A.订货成本量最低的采购批量
B.储存成本最低的采购批量
C.缺货总成本最低的采购批量
D.存货总成本最低的采购批量
参考答案:D
You can't fancy what great trouble they have _______ the problem ________.[ ]
A. to solve; being discussed
B. solving; discussing
C. to solve; to discuss
D. solving; being discussed
某土的天然含水量为ω=38%,塑限含水量为ωp=16%,液限含水量为ωL=44%。判别并计算此土的类别和液性指数IL为()。
A.黏性土、IL=0.786
B.黏土、IL=0.786
C.黏性土、IL=0.214
D.黏土、IL=0.214