下图为反射弧的结构模式图。下列有关叙述中,不正确的是 [ ] A.若上图表示膝跳

题型:选择题

问题:

下图为反射弧的结构模式图。下列有关叙述中,不正确的是

[ ]

A.若上图表示膝跳反射的反射弧,则c代表脊髓   

B.若上图表示听到铃声进入教室的反射弧,则a代表耳的鼓膜   

C.若上图表示看到酸梅分泌唾液的反射弧,则a代表眼球的视网膜   

D.若上图表示维持身体平衡的反射弧,则c代表的神经中枢是小脑

考点:反射
题型:选择题

Questions from 36 to 40 are based on the following passage: China’s trade volume surged in 2010. The development wasn’t only in quantity, but also in quality — namely structure diversification.The European Union, the United States and Japan remained China’s top 3 largest trading partners in 2010.But trade volumes between China and other emerging economies increased also. Bilateral trade volumes between China and other BRIC nations — Brazil, Russia and India — all jumped more than 40 percent. That made India China’s tenth largest trading partner.Huang Guohua, Statistics Department Director of General Administration of Customs said “Trade volume between China and emerging economies increased faster than that with the traditional market. It indicates that China’s foreign trade is diversifying, and showing less dependence on the traditional partners. It’s a good way to reduce risks.”Data also shows that foreign trade volumes developed dramatically in China’s middle and western areas last year. Although the southern province of Guangdong still topped others in the total volume of import and export.Huang Guohua said “The export volume of middle and western areas surged over 40 percent year on year in 2010. The speed was 10 percentage points higher than the country’s total. It indicates that industrial structure has improved in these areas.”The import and export volume of private enterprises surged faster than the country’s average in 2010, with 47 percent year on year growth. Experts say China’s foreign trade development reduced dependence on foreign-funded enterprises.2010 imports and exports reached a historical high with a p sign that the country’s trade sector has shrugged off the global economic recession.

According to the passage, what does the word “BRIC ” mean ()

A.Brazil, Russia , India and China

B.Britain, Romania , Italy and Canada

C.Bulgaria, Russia , Indonesia and Colombia

D.Belgium, Romania , Israel and Cuba

题型:选择题

以职代会为基本形式的职工民族管理制度,其()的特性,具有工会履行维护职能的先进性。

A、代表的广泛性

B、 * * 的前瞻性

C、覆盖的整体性

D、规范的程序性

E、社会的公认性

题型:选择题

雷诺数的物理意义是()。

A.压力和黏滞力之比

B.必要惯性力和黏滞力之比

C.惯性力和重力之比

D.重力和黏滞力之比

题型:选择题

古时的驿站名多有变化,元朝称()

A.站赤

B.候馆

C.邮铺

题型:选择题

ITU确定V.90标准后,多少K调制解调器由此进入了现在主流应用阶段?()

A.64k

B.56k

C.128k

D.32K

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