下面关于麻黄碱的描述错误的是()。 A.麻黄碱能直接作用于肾上腺素受体 B.麻黄碱对

题型:单项选择题 A1/A2型题

问题:

下面关于麻黄碱的描述错误的是()。

A.麻黄碱能直接作用于肾上腺素受体

B.麻黄碱对α和β肾上腺素能受体均有激动作用,引起血压增高,心肌收缩力增强

C.麻黄碱反复用药可出现快速耐药性

D.麻黄碱不能透过血脑屏障,故只有外周作用

E.麻黄碱对皮肤、黏膜血管有收缩作用

考点:麻醉主治医师麻醉药理学麻醉药理学题库
题型:单项选择题 A1/A2型题

20世纪50~70年代,西方经济出现了经济迅速发展的“黄金时期”。下列属于美、日、西欧经济迅速发展的共同原因的是

①本国战后重建拉动了内需②先进科学技术的推动③重视教育的投入、人才的培养④稳定的政治局面[ ]

A.①③④

B.②③

C.①②③④

D.②③④

题型:单项选择题 A1/A2型题

阅读下面的短文,并根据短文后的要求答题。(请将答案写在答题卡上相应番号后的横线上) (共5小题;每小题2分,满分10分)

When you take a taxi in the United States, if you sit in the front seat, the driver will be pleased and talk with you all the way. If you sit in the back seat, however, the driver may be unhappy and unwilling to speak.

At first, I thought that this had something to do with different characters (性格) of the drivers. Later, after I’d had more experiences with taxis, I found that it happened very often. Only when I arrived in San Francisco did I ____________.

I went to see Sonia in San Francisco. One day, Sonia drove the car while her husband, Ji An, sat beside her, and I sat behind Ji An. Later, Ji An got out of the car and suggested that I sit where he had been sitting. It’s not a long way, so I told him that it didn’t matter, but Ji An insisted. I had to move, feeling a little strange.

“Do you know why Ji An asked you to sit here?” Sonia asked me. I shook my head. “If you sit in the front, it means that you and I are friends. If you sit in the back, it seems that I’m just your driver and our relationship is of employer and employee.”

With those words, I understood at once why taxi drivers were so pleased when people sat in the front. On the face of it, the only issue was where one sat. As a matter of fact, where to sit also reflected (反映) the degree of one’s respect for the driver.

Although it is true that the relationship between driver and passenger is a business relationship, people still place an emphasis (强调) on respect and friendship beyond any monetary (金钱的) relationship.

小题1:What’s the best title for the passage? (Please answer within 10 words.)

____________________________________________

小题2: Which sentence in the passage can be replaced by the following one?

It seemed that the problem was no more than the seat.

____________________________________________

小题3:Please fill in the blank in the second paragraph with proper words or phrases to complete the sentence. (Please answer within 10 words)

____________________________________________

小题4:What’s the culture of taking a taxi in the United States? (Please answer within 30 words.)

____________________________________________

小题5: Translate the underlined sentence into Chinese.

____________________________________________

题型:单项选择题 A1/A2型题

CVP的高低主要取决于()

A.血容量

B.静脉血回流量

C.静脉血回流量和右心室排血量

D.肺循环阻力

E.胸膜腔内压

题型:单项选择题 A1/A2型题

图1.5-25所示电路原已进入稳态,t=0时闭合开关S后,uL(t)为()V,iL(t)应为()A。

A.-3e-t,4-3e-10t

B.3e-t.4-3e-t

C.0,0

D.1+3e-t,4+3e-t

题型:单项选择题 A1/A2型题

配置双母线完全电流差动保护的母线配出元件倒闸操作过程中,配出元件的两组隔离开关双跨两组母线时,母线差动保护选择元件()的平衡被破坏

A、跳闸回路

B、直流回路

C、电压回路

D、差流回路

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