【单选题】【消耗次数：1】
人在卧位时运动，心输出量的增加是由于
①
心率增加
②
每搏输出量增加
③
静脉回流增加
④
胸内压增加
参考答案：
复制
纠错
相关题目
【单选题】
心输出量是指（）
①
每分钟由一侧心房射出的血量
②
每分钟由一侧心室射出的血量
③
每分钟由左、右心室射出的血量之和
④
一次心跳一侧心室射出的血量
⑤
一次心跳两侧心室同时射出的血量
【单选题】
正常人心率超过180次/分钟，心输出量减少的主要原因是
①
心室充盈期缩短
②
快速射血期缩短
③
减慢射血期缩短
④
心室肌氧供应不足
⑤
经减压反射调节后心肌收缩能力减弱
【单选题】
正常人心率超过180次/分钟，心输出量减少的主要原因是
①
心室充盈期缩短
②
快速射血期缩短
③
减慢射血期缩短
④
心室肌氧供应不足
⑤
经减压反射调节后心肌收缩能力减弱
随机题目
【单选题】
May I see your tickets and passports, please?
①
No, you can’t
②
Yes, you can
③
here they are
④
No, they are mine
【单选题】
At midnight, he received a telephone call and was asked to meet at once.
①
mystery
②
mysterious
③
mystical
④
mythical
【单选题】
I do not intend to follow that, because we shall have an opportunity to do so on another __________ .
①
A occasion
②
situation
③
condition
④
environment
【单选题】
The price makes ______ impossible for us to build a business relationship.
①
this
②
that
③
it
④
what
【单选题】
Australia has its own identity ,which is very different from that of Britian.
①
busy
②
central
③
capable
④
cultural
【单选题】
Can you come over for dinner with us?
①
I’d like to but I have a meeting tonight
②
It doesn’t matter
③
No, I don’t like
④
Oh, that sounds well
【单选题】
Do you mind if I take a couple of hours off this afternoon?
①
Never mind
②
OK, but what for?
③
Yes, please help yourself
④
Yes, but I don’t care
【单选题】
Would you like to have dinner with us this evening?
①
OK, but I have to go to a meeting now
②
No, I can’t
③
I’d love to, but this evening I have to go to the airport to meet my parents
④
I don’t know