吸附色谱利用了固定相表面对不同组分()的差别,以达到分离的目的。
A、物理吸附性能
B、化学吸附性能
C、溶解度
D、溶解、解析能力
参考答案:A
某企业为增值税小规模纳税人。该企业购入甲材料600公斤,每公斤含税单价为50元,发生运杂费2000元,运输途中发生合理损耗10公斤,入库前发生挑选整理、理费用200元。该批甲材料的入账价值为()元。
A.30000
B.32000
C.32200
D.32700
Despite (1) that alcoholic beverages may (2) , a leading medical expert is advising: don’t (3) just yet. Anybody who’s ever worked in a hospital sees the hospital is full of patients that have (4) disease, but the hospital is not full of patients that have disease related to cholesterol and (5) . In an (6) in the current New England Journal of Medicine, Dr. Goldberg of Columbia University said it is time to see (7) prevents heart disease. Such a study would give (8) to one group of heart disease patients and not to another, and see (9) . In the latest study, which followed (10) over a 12-year period, researchers found that those who drank (11) drinks per week (12) of heart attack by (13) compared to (14) . The lead author, (15) Kenneth Mukamal of Beth Israel Deaconess Medical Center in Boston, insists his study is (16) . For one thing, other studies have not looked at (17) . Dr. Mukamal says (18) also appear to settle which alcoholic beverage are (19) . "Beer and spirits, beer and liquor, were most ply (20) ."