A.good
B.lucky
C.bad
D.pleasant
[单选题]_________________( )52.A. manyB. muchC. littleD. few
[试题]Part B52. Directions:Write an essay of 160-200 words based on the following drawing. In your essay, you should first describe the drawing, then interpret its meaning, and give your comment on it.You should write neatly on ANSWER SHEET 2. (20 points)
[单选题]52. The regular price my neighbor had paid must be _______.A. 12 dollars B. lower than 12 dollarsC. higher than 12 dollarsD. unknown to himself at all
[单选题]52. 质量管理的PDCA循环中,“D”的职能是( )。A.将质量目标值通过投入产出活动转化为实际值B.对质量检查中的问题或不合格及时采取措施纠正C.确定质量目标和制定实现质量目标的行动方案D.对计划执行情况和结果进行检查
[单选题]52.引起细菌性肝脓肿的主要原因是A.皮肤化脓感染B.胆道蛔虫C.坏疽性阑尾炎D.痔核感染E.开放性肝损伤
[单选题]52.根据GB/T27027事后发现产品有危害的原因不包括()A.设计错误B.标准不适当C.未预料到产品的最终用途D.制造缺陷
[单选题]蔗糖的比旋光度为+66.5,果糖比旋光度为―92.4,Glu的比旋光度为+52.2,则平衡时,蔗糖水解液的比旋光度为()A . —40.2B . +26.3C . —19.9D . —79.1
[单选题]粳稻谷一等至五等的整精米率指标分别为≥61.0%L、≥58.0%、()、≥52.0%、≥49.0%。A .≥56%B .≥55%C .≥57%D .≥54%
[问答题] 蔗糖(旋光度为+66.5°)水解生成等摩尔的D-葡萄糖(旋光度为+52.5°)和D-果糖(旋光度为-92°)的混合物。(a)提出一方便的方法,以确定由小肠壁提取的转化酶水解蔗糖的速率。(b)为什么由蔗糖水解形成的等摩尔D-葡萄糖和D-果糖的混合液在食品工业上被称之转化糖?(c)转化酶(即蔗糖酶)作用于蔗糖溶液至混合液的旋光度变为0时,多少蔗糖被水解?