将测量器具与被测工件放在木桌或铸铁平板上等温，其放在铸铁平板上等温的时间比放在木桌上

阅读理解。

     People all over the world write to Big Ben.  They even send birthday presents. Big Ben is not a person

n.  It's a clock.

     Big Ben is the great clock hanging up in a tower of the parliament building.  The people of London like

to see Big Ben's four friendly faces.They like to hear the bell striking (敲) on the hour. Bong! Bong! Bong!

     Big Ben's story started in 1834. In that year the old parliament building was burned down.  Its clock

tower fell to the ground.  There had to be a new building and a new clock.

     Plans were made.  They called for a "King of Clock, the biggest and the best in the world".  So the

clock had to be big.  And it had to keep very good time.

     In two years the big clock'was made.Five more years went by before the clock tower was last finished

d.  Then the four bells for the chimes (鸣响) were brought into the tower.  And at last the big hour bell

was put in place.  It rang out for the first time on July llth,  1859.

     This great bell had to have a name.  A meeting of parliament was called to pick one.  "This clock is the king of clocks," one man said,  "Let's call the bell the Queen of Bells. "

   "Then why not Victoria?" said another (Victoria was the British queen at that time),  The talk about names went on and on.  Then Benjamin Hall got up to speak. He was a big man.  By this time they were all tired.  Someone shouted, “Why not call it Big Ben and be done with it?"

      Everybody laughed, and the meeting was over.  But it was called Big Ben from then on.  Not just the

bell but the whole clock..

1,In 1834, _______.

A. people finished the clock tower

B.people sold the clock tower

C.the clock tower broke down

2.Big Ben is the name ofa .

A. building

B. clock

C. beautifulgirl

3.It tookto build the clock tower_______.

A. seven years

B. five years

C. two years

4.Victoria might be the British queen_______.

A.in 1583

B.in 1768

C.in 1863

5.The best title for this passage is_______.

A.Why Big Ben Is So Big

B. British Parliament Building

C.How Big Ben Got Its Name

酒酿是下列哪种微生物发酵的产物（　　）

A．肺炎双球菌

B．酵母菌

C．乳酸菌

D．醋酸菌

CT检查喉外伤的目的在于（）

A.发现喉软骨骨折

B.显示气道狭窄或闭塞

C.观察有无关节脱位

D.发现喉周组织水肿增厚

E.显示会厌及喉旁间隙内的血肿

PC机属于( )类计算机。

A．大型计算机

B．小型机

C．微型计算机

D．超级计算机

关闭折角塞门的车辆，简称关门车。