重度主动脉瓣狭窄的瓣口面积为（）

答案查看网，轻松搜题/搜资源

【单选题】【消耗次数：1】

重度主动脉瓣狭窄的瓣口面积为（）

① ＜2.0cm2

② ＜1.0cm2

③ 1.0～1.5cm2

④ 0.75～1.0cm2

⑤ ＜0.75cm2

参考答案：

复制

纠错

相关题目

【单选题】子宫动脉在距子宫颈外侧约2cm处行于

① 输尿管的后下方

② 输尿管的前上方

③ 输尿管的外侧

④ 输卵管前下方

查看完整题目与答案

【单选题】某溶液用2cm吸收池测量时，T=60%，若改用1cm吸收池，T和A是

① 77%，0.111

② 58%，0.236

③ 30%，0.523

④ 60%，0.222

查看完整题目与答案

【单选题】符合风湿性心脏病主动脉瓣狭窄的典型体征是

① 周围血管征阳性

② 主动脉瓣区舒张期喷射样杂音

③ 主动脉瓣区收缩期隆隆样杂音

④ 主动脉瓣区舒张期隆隆样杂音

⑤ 主动脉瓣区收缩期喷射样杂音

查看完整题目与答案

【单选题】牡丹定植间距的行距[ ]50cm、株距[ ]40cm

① 50cm，40cm

② 80cm，90cm

③ 90cm，80cm

④ 20cm，10cm

查看完整题目与答案

【单选题】患者，截瘫，尾骶部有一创面，面积2cm×1.5cm，深达肌层，有脓性分泌物，创面周围有黑色坏死组织，该创面应如何处理（）

① 用50%乙醇按摩创面及周围皮肤

② 用生理盐水冲洗并敷盖新鲜蛋膜

③ 暴露创面，紫外线每日照射1次

④ 剪去坏死组织，用双氧水冲洗，置引流纱条

⑤ 涂厚层滑石粉包扎

查看完整题目与答案

【单选题】丈量一正方形的4条边长，其观测中误差均为±2cm，则该正方形周长的中误差为±( )cm。

① 0.5

② 2

③ 4

④ 8

查看完整题目与答案

【单选题】一个球的直径是6cm，距球心2cm处有一截面圆,这个截面圆的半径是()

① <img class="kfformula" src="20190809/1565323084593264.png" data-latex="4\sqrt {2}"/>

② <img class="kfformula" src="20190809/1565323084828913.png" data-latex="\sqrt {5}"/>

③ <img class="kfformula" src="20190809/1565323084235099.png" data-latex="1"/>

④ <img class="kfformula" src="20190809/1565323084316280.png" data-latex="\sqrt {13}"/>

查看完整题目与答案

【判断题】 11、主动脉瓣狭窄导致心脏前负荷增加，可引起心力衰竭。

① 正确

② 错误

查看完整题目与答案

【单选题】正五棱锥的底面积是<img class="kfformula" src="20190809/1565328530277328.png" data-latex="26{cm}^{2}"/>，高是<img class="kfformula" src="20190809/1565328530106797.png" data-latex="6cm"/>，则其体积是（）。

① <img class="kfformula" src="20190809/1565328531591499.png" data-latex="104{cm}^{3}"/>

② <img class="kfformula" src="20190809/1565328531884474.png" data-latex="{52cm}^{3}"/>

③ <img class="kfformula" src="20190809/1565328531242148.png" data-latex="78{cm}^{3}"/>

④ <img class="kfformula" src="20190809/1565328531496628.png" data-latex="156{cm}^{3}"/>

查看完整题目与答案

【单选题】某块岩石经试验测量，其干质量为300g，总体积为200cm3固体颗粒体积为150 cm3，则其毛体积密度是什么

① 1.0g/cm3

② 1.5g/cm3

③ 2.0g/cm3

④ 3.0g/cm3

查看完整题目与答案

随机题目

【单选题】 I remember _______ you the story last night.

① telling

② told

③ to tell

④ have told

查看完整题目与答案

【单选题】 Not __________, with youth unemployment so high, some school – leavers with qualifications fail to find jobs.

① obviously

② surprisingly

③ particularly

④ normally

查看完整题目与答案

【单选题】 I’ll send you a short message as soon as I _______ in Hong Kong.

① arrived

② will arrive

③ am going to arrive

④ arrive

查看完整题目与答案

【单选题】 Good morning, Dr Johnson’s office. Can I help you?

① Speaking, please

② I’d like to make an appointment, please

③ Yes, go on

④ No, you can’t

查看完整题目与答案

【单选题】 The population of many Alaskan cities has __________ doubled in the past three years.

① larger than

② as great as

③ more than

④ as many as

查看完整题目与答案

【单选题】 The match was cancelled because most of the members __________ a match without a standard court.

① objected to having

② objected to have

③ were objected to have

④ were objected to having

查看完整题目与答案

【单选题】 - Shall we sit up here on the grass or down there near the water?

① I’d rather stay here if you don’t mind

② Sorry, I don’t like neither

③ Certainly, why not?

④ Yes, we like these two places

查看完整题目与答案

【单选题】 He said he would continue a support us _____ we didn’t break the rules.

① as well as

② as soon as

③ as far as

④ as long as

查看完整题目与答案

【单选题】 Can I have a look at your passport?

① It is here

② Here is it

③ Here you are

④ No, you can’t

查看完整题目与答案

【单选题】 Her sun – tanned face suggested that she __________ in excellent health.

① be

② is

③ was

④ were

查看完整题目与答案