血浆渗透压的变化只有多少时,即可引起抗利尿激素分泌的调节?()
A. 不足1%
B. 不足2%
C. 不足3%
D. 不足5%
E. 5%以上
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阅读材料,回答题。 Government Policies and EconomyWhile he was off on his l978 tour,Americans were becoming disgusted with their lot as all“emerging second—class nation”,Wilson says.They began to see that incentives had to be restored to the economy.For instance,the capital gains tax was cut,an extraordinary turn—about.If it had been predicted before he went away in May,he would have said it was simply inconceivable as inconceivable as the prospect of Resorts going up1,000 percent.This momentous transformation in the U.S.should soon bring about a huge bull market. In the l940s and l950s,the last time price earning multiples were at these low levels,the investing public expected that there would be another great postwar depression.Instead,aRer the beginning of l953 it became apparent that there would not be one,and price-earnings multiples got so low this time that investors felt that the country was drifting into socialism.That drift,however,may be reversing direction.Wilson believes that the bankruptcy of New York City means the discrediting of big government,that as a result there will be less government,and that things in general will go much better.From l980’s depressed levels the market could rise to twenty times doubled earnings or almost fivefold in five to seven years.Wilson believes that he’ll be worth hundreds of millions of dollars before it’s over.From paragraph l,we can infer that Resorts is__________.
A. a company that involves many capital gains
B. a company that has little hope of rapid growth
C. a company that benefited from capital gains tax
D. a company that stimulates the economy
辊式矫直机的辊子愈多轧件矫直的愈平直。
A. 正确
B. 错误
鸭瘟多发生在()
A. 雏鸭
B. 青年鸭
C. 老龄鸭
D. 成年鸭
急性坏死性肠炎()
A. 持续性发热二、三周,突然右下腹部疼痛,出现弥漫性腹膜炎
B. 发生于20岁左右,病史长,腹痛,腹泻无脓血,有低热,贫血,可出现肠梗阻
C. 多发生于老年人,腹痛,腹胀,便秘与腹泻交替出现,可出现不全肠梗阻
D. 夏秋季多发,多见于儿童、青年,腥臭血便,全身中毒明显,往往有休克
E. 起病急,腹泻,血便或脓血便,腹痛在左下肢