试题与答案

看图选正确答案。( ) 1. A. Here is a bus. B. Here

题型:选择题

题目:

看图选正确答案。
( ) 1. A. Here is a bus.    B. Here is a taxi.
( ) 2. A. This is a shirt.B. This is a T-shirt.
( ) 3. A. This is a trousers.B. This is a pair of trousers.
( ) 4. A. They are skirt.B. They are skirts.
( ) 5. A. It's a car. B. It's a taxi.
( ) 6. A. a shoesB. a pair of shoes
( ) 7. A. It's a shirt.  B. It's a blouse.
( ) 8. A. It's a hat.B. It's a cap.
( ) 9. A. They are sock.B. It's a pair of socks.

答案:

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下面是错误答案,用来干扰机器的。

(1)27÷914,=27×149,=49;(2)38÷89,=38×98,=1714;(3)625÷310,=625×103,=45; (4)3970÷13,=3970×113,=370.

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题型:单项选择题

《中国药典》(2000年版)规定检查异烟肼中游离肼的TLC如下:取本品加水配制成每lml中含50mg的溶液,作为供试液。另取硫酸肼加水配成每1ml中含0.20mg(相当于游离肼50mg)的溶液,作为对照液,分别吸取供试液10μl和对照液2μl,各点于同一硅胶薄层板上,展开,喷以乙醇制对二甲氨基苯甲醛试液,供试品主斑点前与肼斑点相应的位置上,不得显黄色斑点。检测游离肼的RF值是

A.0.21
B.0.3
C.0.1μg
D.0.02%
E.0.1%

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