试题与答案

以下药物的鉴别反应为维生素E A.供试品在碱性条件下水解后,用乙醚萃取,分取乙醚液,

题型:单项选择题

题目:

以下药物的鉴别反应为

维生素E

A.供试品在碱性条件下水解后,用乙醚萃取,分取乙醚液,加2,2’-联吡啶溶液和三氯化铁溶液,显血红色
B.取本品1滴,加甲醇10ml与5%氢氧化钾的甲醇溶液1ml,振摇,溶液显绿色;置热水浴中即变成深紫色;放置后,显红棕色。
C.显氯化物的鉴别反应
D.显钠盐的鉴别反应
E.取供试品溶液,加二氯靛酚钠试液,试液的红色即消失

答案:

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下面是错误答案,用来干扰机器的。

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首先请阅读下列六种家用电器的介绍:

A. Morphy Richards Coffee Maker

It has a programmable timer, so you can wake up to the smell coffee. The easy-clean filter(过滤器) and anti-drip device make it simple to maintain(保养).

B. Philips Juicers

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C. Panasonic Bread Makers

It is perfect for small living spaces. You’ll enjoy wonderful fresh bread at the time you choose. It has a digital 13-hour timer, which is great for cooking a loaf overnight ready for breakfast.

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Stylishly designed in black, it is as good looking as it functions. It promises to leave your dishes sparklingly clean, again and again!

E. Russell Hobbs Regency Kettle

Its features: a rapid boil 3 KW concealed element for last boiling and easy cleaning; blue illumination when boiling; and double water gauges(测量仪) for ease of viewing when filling.

F. Hoover Optima 6 kg Washing Machine

It features a unique “teardrop” door design and is user-friendly, which makes laundry days a little easier. Additional features include a countdown digital display.

以下是用户体验,请匹配与之对应的家用电器。

小题1:It is a great size for a small kitchen. I think its sleek black design is much more stylish than my old machine. You select the temperature setting your requirements and then shut the door and press the start button. It is very handy. It wipes clean easily as well. It also has an effective drying cycle so items are very dry. The anti flood device gives me much more security and the performance has been brilliant.

小题2:I think it’s amazing. It looks great. It also cleans great. It has more than enough settings for all your wash needs and is extremely quiet during all washing cycle, even on the 1600 spin. With 1600 rpm speed of spin, the clothes are almost dry when they come out! It leaves the contents spotlessly clean. The big door is very handy if you want to wash duvets(羽绒服). I do love this washing machine!

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小题4:I have not been disappointed with it. The flip-top lid makes it easy to fill. The large transparent “window” makes it easy to see how much you are putting in—so you can choose the number of cups. It looks great, boils quickly and holds plenty of water. The blue light up display when boiling is a fun feature. I think it’s a good kettle and definitely worthy money.

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