曲线a、b表示物质跨膜运输的两种方式,下列分析正确的是()。 A.CO通过方式a运输

题型:单项选择题

问题:

曲线a、b表示物质跨膜运输的两种方式,下列分析正确的是()。

A.CO通过方式a运输

B.葡萄糖通过方式a进入红细胞

C.低温只会影响方式b的运输

D.方式b表示物质顺浓度梯度的运输

考点:高级中学生物第一章分子与细胞第一章分子与细胞题库
题型:单项选择题

活塞式压缩机适用于()的场合。

A.大流量而压力较高

B.中小流量而压力较高

C.大流量而压力较低

D.中小流量而压力较低

题型:单项选择题

阅读下面语言材料,完成表格中相关内容。

Ladies and gentlemen,

Welcome to England! The weather of England is very changeable (易变的). It can be rainy, sunny, cloudy, windy, stormy, warm, foggy, or cold at any time of the year. If it is raining when you get up in the morning, it can be hot and dry by the afternoon. It may be sunny when you get up, but when you go out, it may be rainy. So don’t forget to take an umbrella with you. The west of England is wetter than the east, and the north is cooler than the south. You should be ready for any kind of weather.

In England, shops are usually open from 9.00 a.m. to 5.30 p.m. On Sundays, some shops are open from 10.00 a.m. to 4.00 p.m. But a lot of shops are closed. Banks, museums or other places are open from 10.00 a.m. to 5.00 p.m. You can go to the parks at any time.

All the cities have buses, trains and taxis. People wait in line for buses and they are unhappy if you push in at the front. Don’t forget that traffic goes on the left.

Be careful with yourselves when you travel in England!

题型:单项选择题

关于通气技术,下列哪项是错误的()。

A.及时清除口鼻部异物

B.用提颏或抬颈法开放气道

C.环甲膜穿刺术适用于气管堵塞

D.使用通气导管改善通气功能

E.气管裂伤时,可通过裂口插入气管导管

题型:单项选择题

强调语言是一种外显的、可观察的行为,是通过一系列反应学会的是______

A.行为主义论语言学习模式
B.先天论语言学习模式
C.认知相互作用论语言学习模式
D.社会相互作用论语言学习模式

题型:单项选择题

与双胎妊娠关系不大的是

A.氯米芬
B.缺铁性贫血
C.子宫破裂
D.早产
E.产后出血

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