关于钙通道功能状态,下列哪项正确: A.维拉帕米作用于失活态 B.硝苯地平作用于开放

题型:单项选择题

问题:

关于钙通道功能状态,下列哪项正确:

A.维拉帕米作用于失活态
B.硝苯地平作用于开放态
C.钙拮抗药与静息态的亲和性比较高
D.地尔硫草作用于开放态
E.3种功能状态中仅开放时Ca2+内流

考点:基础医学医学药理学离子通道概论及钙通道阻滞药
题型:单项选择题
Mr. White works in an office. He’s able and can easily deal with all kinds of matters.    60   . Of course he’s often busy and has no time to do the housework. His wife does all at home.
Last Friday, their daughter was hurt in a traffic accident and had to be in hospital. Mrs. White had to look after her there and she couldn’t go home to take care of the house and her husband. When Mr. White was at home alone, he never cooked meals.    61   .
Yesterday morning, before Mr. White got up, the telephone rang.    62   . His friend told him to write down an important telephone number. But he could find neither a pen nor a piece of paper. At this moment, he found there was much dust (灰尘) on the table and he wrote the number on it with his forefinger (食指).    63   . In the afternoon, his wife came back to look for a sweater for her daughter. When Mr. White returned from work and saw his wife cleaning the table,  he rushed to her while shouting, “Stop!” But it was too late!
A. He sat up to answer it
B. But soon he forgot it and went to work
C. She worked hard and made much money
D. And he never cleaned up the rooms, either
E. So he’s always paid more than his workmates
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每年温暖季节,特别是 5 月中旬到 6 月初,黄河河套及蒙古人民共和国与我国新疆交界地区,会形成一个高温干燥的大陆热低压,又干又热的气流围绕着这个低气压旋转起来,形成了干热风,当它离开源地东移过程中,逐渐变得更加干热。干热风盛行时正值我国北方地区小麦的乳熟期,造成小麦大幅度减产,当地农民伤心地称之为“杀麦刀”。

阅读上述材料,结合你所学知识回答下列问题。

(1)材料中的小麦什么时候种植?是什么类型的小麦?

(2)分析河套地区发展农业的有利自然条件。

(3)材料中所述地区干热风的大陆热低压的形成条件是什么?

(4)针对干热风的危害,北方人民在和灾害作斗争的过程中,采取了一些防御和减少灾害的有效措施.试分析是哪些措施。

(5)干热风东移沿途主要的生态问题是     ____________________________________,造成该生态问题的人为原因有       _____________________________________________

治理的关键是     ____________________________________________________________

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上市公司在一年内购买、出售重大资产或者担保金额超过公司资产总额( )的,应当由股份有限公司股东大会作出决议,并经出席会议的股东所持表决权的( )以上通过。

A.30% 1/3
B.20% 1/3
C.25% 1/2
D.30% 2/3

题型:单项选择题

《童年》中主人公同样感受道人间的温暖,从文中"我"出了6件这样的事情加以简要描写?

题型:单项选择题

依据关于贯彻落实《中 * * 国务院关于加快水利改革发展的决定》加强水利安全生产工作的实施意见,提高水利生产经营单位“六大能力”包括()。

A.依法依规安全生产能力

B.事故救援和应急处置能力

C.技术装备的安全保障能力

D.事故防范能力

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