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【多选题】
临床试验中采用随机分组法，其目的是A.
使试验更具有代表性
B.
使试验组和对照组人数相等
C.
使试验因素对试验组和对照组的作用均衡
D.
使非试验因素对试验组和对照组的作用均衡
E.
以上都不是
F.
使试验组和对照组的研究对象基本特征具有可比性
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【单选题】&8226;Read the article below about Microsoft anti-trust suit. &8226;Choose the best sentence from the opposite page to fill each of the gaps. &8226;For each gap 8--12, mark one letter (A--G) on your A...
A.
Bob Herbold, the executive vice president and chief operating officer for Microsoft, said that the judge's ruling this week is just a first step in the process that is just getting under way.
B.
Microsoft's competitors know that the company in fact has a referee starting directly over the shoulder every time it moves on a playing field.
C.
What's more, Microsoft erected the barriers to keep others out of the marketplace.
D.
The Justice Department's top anti-trust prosecutor says this week that the government is looking at a full range of remedies.
E.
Jackson said that the company took that additional profit and invested it not in its own products but in efforts to keep other companies out of various software markets. Meanwhile Bill Gates, in a full-page advertisement published in the Washington Post and addressed to the company's customers, partners and shareholders, commented on Friday's ruling. G He claimed that Microsoft is committed to resolving this matter in a fair and responsible manner, while ensuring that the fundamental principles of consumer benefit and innovation are protected. (8)
【简答题】豆科植物花的雄蕊为()。