下列不属于影响种植业的因素有[ ] A.民族风俗 B.适于耕作的土地 C.纬度位

题型:选择题

问题:

下列不属于影响种植业的因素有[ ]

A.民族风俗

B.适于耕作的土地

C.纬度位置

D.热量、水分、光照条件

考点:中国的农业
题型:选择题

下列关于神经兴奋的叙述,错误的是[ ]

A.兴奋部位细胞膜两侧的电位表现为膜内为正、膜外为负

B.神经细胞兴奋时细胞膜对Na+通透性增大

C.兴奋在反射弧中以神经冲动的方式双向传递

D.细胞膜内外K+、Na+分布不均匀是神经纤维兴奋传导的基础

题型:选择题

下图表示相连线的酸、碱、盐之间可以发生复分解反应,右下表提供的四组物质符合左下图要求的是(  )

物质

组别

盐1盐2
AH2SO4Ca(OH)2BaCl2Na2CO3
BH2SO4Ca(OH)2Na2CO3BaCl2
CHClNaOHNa2CO3BaCl2
DH2SO4Ba(OH)2Na2CO3CuSO4

A.A

B.B

C.C

D.D

题型:选择题

事故放水管在汽包上的开口位置宜在()。

A、汽包下部

B、最高水位处

C、正常水位与最低水位之间

题型:选择题

根据《66kV及以下架空电力线路设计规范》GB50061—2010规定,66kV电压的线路,带电作业杆塔带电部分与接地部分的最小间隙满足要求的是()。

A.0.5米

B.0.6米

C.0.7米

D.0.8米

题型:选择题

The day was star-crossed: Friday the 13th in the month of October, on the eve of the second looming anniversary of a devastating market crash. "I’m telling you, psychology is really funny. People get crazy in situations like that," said portfolio strategist Elaine Garzarelli. Last week Friday the 13th lived up to its frightful reputation. After drifting lower at a sleepy pace for most of the day, the Dow Jones industrial average abruptly lurched into a hair-raising sky dive in the final hour of trading.

The Bush Administration moved swiftly to avert any sense of crisis after the market closed. Declared Treasury Secretary Nicholas Brady: "It’s important to recognize that today’s stock market decline doesn’t signal any fundamental change in the condition of the economy. The economy remains well balanced, and the outlook is for continued moderate growth." But Massachusetts Democrat Edward Markey, who chairs a House subcommittee on telecommunications and finance, vowed to hold hearings this week on the stock market slide. Said he: "This is the second heart attack. My hope is that before we have the inevitable third heart attack, we pay attention to these problems."

Experts found no shortage of culprits to blame for the latest shipwreck. A series of downbeat realizations converged on Friday, ranging from signs of a new burst of inflation to sagging corporate profits to troubles in the junk-bond market that has fueled major takeovers. The singular event that shook investors was the faltering of a $6.75 billion labor management buyout of UAL, the parent company of United Airlines, the second largest U. S. carrier.

On one point most thoughtful Wall Streeters agreed: the market had reached such dizzying heights that a correction of some sort seemed almost inevitable. Propelled by favorable economic news and a wave of multibillion-dollar takeovers, stocks had soared more than 1,000 points since the 1987 crash. But by last August some Wall streeters were clearly worried.

The heaviest blow to the market came Friday afternoon. In a three-paragraph statement, UAL said a labor-management group headed by Chairman Stephen Wolf had failed to get enough financing to acquire United. Several banks had apparently balked at the deal, which was to be partly financed through junk bonds. The take-over group said it would submit a revised bid "in the near term,’ but the announcement stunned investors who had come to view the United deal as the latest sure thing in the 1980s buyout binge. Said John Downey, a trader at the Chicago Board Options Exchange: "The airline stocks have looked like attractive takeover targets. But with the United deal in trouble, everyone started to wonder what other deals might not go through.

The tone of the writer as reflected in the first sentence is()

A. sensible

B.irrational

C. defiant

D. ironical

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