下列哪项是当归抗血栓形成的作用机理()A、缩短凝血酶原时间 B、增加纤维蛋白原含量

题型:单项选择题

问题:

下列哪项是当归抗血栓形成的作用机理()

A、缩短凝血酶原时间

B、增加纤维蛋白原含量

C、增加血小板数

D、抑制血小板聚集

E、增加血液黏度

考点:中药药理学中药药理学题库
题型:单项选择题

Because earthquakes happen without warning, it’s important to take steps now to prepare. Because you don’t know where you will be when an earthquake happens, prepare some supplies for your home, workplace, and car.

1. Water.

A person needs at least 1/2 gallon of water daily just for drinking. Store at least 1 gallon of water per person per day and be prepared for a 72-hour period. It is suggested that you buy bottled water. Keep bottled water in its original container and do not open it until you need to use it. Also, do check the “use by” date.

2. Food.

It’s always a practical idea to keep a supply of non-perishable(不易腐烂的) food on hand. Have an enough supply of canned food, powdered milk, dried fruits, non-salted nuts and canned juices for at least 72 hours.

3. Flashlights(手电筒) and spare batteries.

Keep a flashlight beside your bed, at your place of work, and in your car. Do not use matches or candles after an earthquake until you are sure that no gas leaks.

Prepare a battery-powered radio and spare batteries. Most telephones will be out of order, so radios will be your best source of information.

4. Clothes.

If you live in a cold place, you must think about warmth. You might not have heat after an earthquake. Think about your clothing and bedding supplies.

小题1: Why should people prepare themselves for an earthquake?

A.Because earthquakes can be known before they happen.

B.Because earthquakes take place without warning.

C.Because earthquakes usually take place in the neighborhood.

D.Because it’s people’s daily work to prepare the earthquakes.小题2: About the prepared water, which description is RIGHT?

A.A person should prepare 0.5 gallon of water for one day.

B.You’d better use your own containers to keep water.

C.You’d better open the bottled water when you buy it.

D.You shouldn’t open the bottled water until you need it.小题3: You should prepare all of the following except ______.

A.powdered milk

B.fresh vegetables

C.dried fruits

D.canned juices小题4:According to the article we know that ______.

A.we need to prepare some supplies only at home

B.a telephone is the most important prepared thing

C.flashlights but not matches are first used after earthquakes

D.clothes are used to protect your head小题5: If you live in a cold place, you should prepare _______.

A.some warm clothes and bedding supplies

B.some hot water

C.some batteries

D.some flashlights

题型:单项选择题

当物业质量与市场领导者的物业质量相近时,如果定价比市场领导者定价稍低或低得较 多,则认为该开发商采用了( )。

A.领导定价法

B.随行就市定价法

C.目标定价法

D.挑战定价法

题型:单项选择题

下列有关羊水栓塞的叙述,不正确的是()。

A.过敏性休克是羊水栓塞迅速死亡的重要原因

B.羊水中的促凝物质可激活内源性凝血系统,导致DIC

C.肺血管栓塞和痉挛可引起通气/血流比值失调

D.羊水中的有形物质栓塞肺毛细血管时,可兴奋迷走神经,引起反射性肺血管扩张

E.羊水进入母体循环的途径有:宫颈内膜小静脉、胎盘边缘破裂的血窦、子宫破裂后敞开的子宫血窦

题型:单项选择题

已知在25℃,101kPa下,1gC8H18(辛烷)燃烧生成二氧化碳和液态水时放出48.40kJ热量。表示上述反应的热化学方程式正确的是[ ]

A.C8H18(1)+25/2O2(g)=8CO2(g)+9H2O(g) △H=-48.40kJ·mol-1

B.C8H18(1)+25/2O2(g)=8CO2(g)+9H2O(1) △H=-5518kJ·mol-1

C.C8H18(1)+25/2O2(g)=8CO2(g)+9H2O(1) △H=+5518kJ·mol-1

D.C8H18(1)+25/2O2(g)=8CO2(g)+9H2O(1) △H=-48.40kJ·mol-1

题型:单项选择题

下列膀胱损伤的临床特点,不正确的是()。

A.充盈的膀胱更易遭直接暴力损伤

B.腰骶部损伤最易合并膀胱损伤

C.病理分为挫伤、穿孔和破裂3种类型

D.膀胱破裂可分为腹膜内、腹膜外和混合型膀胱破裂3类

E.休克、腹痛、排尿困难和血尿为主要临床表现

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