啤酒酿造用水及其要求
我国《卷烟》国家标准中规定的低焦油卷烟的焦油含量为() ["<12.0mg/支","<13.0mg/支","<14.0mg/支","<15.0mg/支"]
()铸件,若采用湿型浇注,当铸件壁厚较大时,最容易产生夹砂缺陷。 ["圈类","平板类","箱体类","齿轮类"]
干麦芽的处理及目的
我国《卷烟》国家标准中规定的中低焦油卷烟的焦油量为() ["(11.0~16.0)/支","(12.0~16.0)mg/支","(12.0~15.0)mg/支","(13.0~16.0)mg/支"]
简述优良酵母菌种的要求(答对5条即可)