下列说法不正确的是（ ） A．SO2在食品工业中可以用来防腐、抗氧化、漂白 B．

此题要求改正所给短文中的错误。 对标有题号的每一行作出判断；如无错误，在该行右边横线上画一个勾（√）；如有错误（每行只有一个错误），则按下列情况改正；

此行多一个词：把多余的词用斜线（\）划掉，在该行右边横线上写出该词，并也用斜线划掉。

此行缺一个词：在缺词处加一个漏字符号（∧），在该行右边横线上写出该加的词。

此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。

注意：原行没有错的不要改。

Once, lately at night, an Englishman came out

of his room into a passage of the hotel and ask

the servant to bring her a glass of water. The servant

did as he asked. The Englishman returned to his

room, and a few minutes later he came into the passage again

and once more asked the servant a glass of water.

Every a few minutes the Englishman would come out

of his room and repeated his request. After half an hour

the astonishing servant decided to ask the man what

he was doing with the water. “Nothing,” he answered

calmly. “It’s simple that the room is on fire.”

物理在生活中有很多应用，以下实例中利用连通器原理制成的是

A．压力锅

B．吸尘器

C．热气球

D．船闸

显示器分辨率具有（7） 像素时，其清晰度较高,显示的效果较好。

A．600x800

B．1024x768

C．1280x1024

D．1600x1200

建筑材料、半成品、构配件、施工设备、施工设施属于项目资源中的()。

A．物资资源

B．人力资源

C．财力资源

D．供应资源

诊断肺动脉栓塞的金标准是

A．X线平片
B．CT肺动脉造影
C．MRI
D．X线肺动脉造影
E．超声