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【多选题】
测定旋光度时,应注意
A.
测定前、后均应用水做空白校正,以确定零点没有变动
B.
测定前,应调节溶液温度为20℃
C.
测定管内液体不得有气泡
D.
供试液如浑浊,应用干燥滤纸滤过,测定续滤液的旋光度
E.
不要磨损透光片
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参考答案:
举一反三
【单选题】听力原文:Which one is true according to the conversation? (12)
A.
Jim often goes to the cinema.
B.
Jim goes to the cinema once a week.
C.
Jim doesn't like watching TV.
D.
Jim seldom stays at home.
【单选题】四冲程发动机完成一个工作循环,凸轮轴转()圈
A.
二周
B.
一周
C.
半周
【简答题】A.He suggested Tom not to write the novel any longer. B.He suggested Tom to go to cinema every night. C.He suggested Tom to follow his suggestions. D.He suggested Tom to leave more cigarettes for him.
【单选题】Prof. Ward hardly ever went to______the theater.
A.
neither the cinema nor
B.
either the cinema nor
C.
neither the cinema or
D.
either the cinema or
【简答题】请听下面一段材料,回答第1至3题。 1. Where does the conversation probably take place? [     ] A. At the cinema. B. On a train. C. At a booking office. 2. Which train will the man take? [     ] A. The morning train. B...
【判断题】四冲程发动机完成一个工作循环凸轮轴转动两周。
A.
正确
B.
错误
【判断题】四冲程发动机完成一个工作循环,凸轮轴转二周。
A.
正确
B.
错误
【单选题】Who is NOT included in the participants list?
A.
Filmmakers.
B.
Lawmakers.
C.
Film stars.
D.
Cinema arts students.
【判断题】post属于表单隐式提交信息的方法
A.
正确
B.
错误
【单选题】从以下所给选项中选出与 51~55 题意义相符的选项。
A.
soilder
B.
hospital
C.
cook
D.
school
E.
cinema
F.
restaurant
G.
driver 第 51 题 People go there for meals.
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