下列何病在退疹时出现大片状脱皮A．麻疹 B．水痘 C．幼儿急诊 D．猩红热 E．风疹

参与非特异性细胞免疫的细胞是

A．中性粒细胞
B．嗜酸粒细胞
C．嗜碱粒细胞
D．单核-巨噬细胞
E．淋巴细胞

如图所示电路中滑动变阻器R₁的阻值为200Ω，电阻R₂阻值为300Ω，电源电压为6V，当滑片由a端滑到b端，电压表的示数的变化范围是（   ）

A．6V～0V

B．3.6V～6V

C．6V～3.6V

D．6V～2.4V

2011年度作为中国—阿拉伯交流协会最高荣誉奖项——“郑和奖”的颁奖盛典计划将于12月8日在北京举办。郑和举世闻名的精神,已经不单纯属于中华精神财富,也是全人类薪火相传的共同精神财富。读图，回答问题:

图1

小题1:明代郑和七下西洋，利用盛行风在甲、丙、丁三地之间往返，下列叙述正确的是(   )

A．夏季，利用偏北风，从甲地经丙地到达丁地

B．冬季，利用偏北风，从甲地经乙、丙地直达丁地

C．夏季，利用偏南风，从丁地经丙地返回甲地

D．冬季，利用偏南风，从甲地经丙地到达丁地小题2:下列图中，与乙地的气候类型相似的是(　　)

In the second half of each year, many powerful storms are born in the tropical Atlantic and Caribbean seas. Of these, only about a half a dozen generate (引起，导致) the strong, circling winds of 75 miles per hour or more that give them hurricane status, and several usually make their way to the coast. There they cause millions of dollars of damage, and bring death to large numbers of people.

The great storms that hit the coast start as innocent circling disturbances hundreds--- even thousands--- of miles out to sea. As they travel aimlessly over water warmed by the summer sun, they are carried westward by the trade winds. When conditions are just right, warm, moist air flows in at the bottom of such a disturbance, moves upward through it and comes out at the top. In the process, the moisture in this warm air produces rain, and with it the heat that is converted to energy in the form of strong winds. As the heat increases, the young hurricane begins to swirl in a counter-clockwise (逆时针方向) motion.

The average life of a hurricane is only about nine days, but it contains almost more power than we can imagine. The energy in the heat released by a hurricane’s rainfall in a single day would satisfy the entire electrical needs of the United States for more than six months.

Water, not wind, is the main source of death and destruction in a hurricane. A typical hurricane brings 6 to 12 inch downpours resulting in sudden floods. Worst of all is the powerful movement of the sea, the mountains of water moving toward the low-pressure hurricane center. The water level rises as much as 15 feet above normal as it moves toward shore.

小题1:When is an ordinary tropical storm called a hurricane?

A．When it begins in the Atlantic and Caribbean seas.

B．When it hits he coastline.

C．When it is more than 75 mils wide.

D．When its winds reach 75 miles per hour.小题2:What is the worst thing about hurricane?

A．The destructive effects of water.

B．The heat they release.

C．That they last about nine days on the average.

D．Their strong winds.小题3:The counter-clockwise swirling of the hurricane is brought about by           .

A．the low-pressure area in the center of the storm

B．the force of waves of water.

C．the trade winds

D．the increasing heat小题4:Apparently the word “downpour” in the fourth paragraph means           .

A．heavy rainfall

B．dangerous waves

C．the progress of water to the hurricane center

D．the increasing heat

乙二醇罐标定下封头时，当液位0%时加水10T，乙二醇比重为1.1。那么乙二醇罐液位0%时，罐内乙二醇的量为（）。

A、9T

B、10T

C、11T

D、12