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【简答题】
2一(1一环己烯基)一2一丙醇在硫酸中脱水反应的分子式为C9H14的共轭烯烃化合物，测得其紫外光谱λmax=242 nm(εmax=10 100 L?mol-1?cm-1)。预计脱水过程如下： 试推断这个反应机理是否正确，并讨论其反应过程。
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【单选题】Jacinda quit her job as a blackjack dealer where she made $42,000 per year to start her own florist business. Her business expenses are $14,000 per year on business rent, $21,000 per year on supplies,...
A.
$104,000
B.
$86,000
C.
$62,000
D.
$44,000
【单选题】3. When he began six years ago, he faced a _____ task. Paint was flaking and chunks of plaster were detached from the limestone walls. Insects nested in corners. A. florist B. flagrant C. fran...
A.
a person who owns or works in a shop/store that sells flowers and plants 花商
B.
(of an action 行动) shocking because it is done in a very obvious way and shows no respect for people, laws, etc. 骇人听闻的；公然的；罪恶昭彰的
C.
匆忙混乱的;紧张忙乱的 If an activity is frantic, things are done quickly and in an energetic but disorganized way, because there is very little time.
D.
having or showing very strong and sincere feelings about sth 热情的；热诚的；热烈的
【单选题】Paul: I guess so. Can you go to the ________? We could take flowers.
A.
pharmacy
B.
department store
C.
florist
【简答题】Read the advertisements carefully. Then answer the questions that follow. WE NEED OFFICE CLEANERS! Three people are required for professional cleaning in the CBD area. Working hours from 5:00 pm on ...
【简答题】Roger Conner is a modern-day Horatio Alger hero. Roger started out as an unpaid worker in a small flower shop. He has become the owner of a florist company whose sales are well over $100 000 a year. ...
【单选题】某两端铰支矩形压杆,弹性模量 E =200GPa ,横截面尺寸为 2 × 1 cm 2 ,长度为 4m ,则其临界压力的值为
A.
F cr =195N
B.
F cr =205N
C.
F cr =215N
D.
F cr =225N
【单选题】Jacinda quit her job as a blackjack dealer where she made $42,000 per year to start her own florist business. Her business expenses are $14,000 per year on rent, $21,000 per year on supplies, and $9,0...
A.
$104,000
B.
$86,000
C.
$62,000
D.
$44,000
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