【单选题】【消耗次数：1】
维持胸内负压的必要条件是
①
呼吸道阻力
②
胸膜腔密闭
③
呼气肌收缩
④
吸气肌收缩
参考答案：
复制
纠错
➡️如需代学继续教育，联系微信：yizhituziang
相关题目
随机题目
【单选题】
( ) to make a long and exhausting trip to a strange country, I prefer to be a sofa potato in the coming 7-day vacation.
①
Rather than
②
Other than
③
No other than
④
No more than
【单选题】
Apart from the meaning of broadening one’s horizon, to ( ) also means to be alert to and be aware of the potential danger of something.
①
keep an eye on
②
fix one’s eyes on
③
turn a blind eye to
④
open one’s eyes
【单选题】
Drunk driving ( ) most of the road accidents, leading to huge loss of lives and property every year.
①
contributes to
②
attributes to
③
distributes to
④
retributes to
【单选题】
As a ( ) student, he enjoys many conveniences and resources which are only wild wishes for other average ones.
①
tip
②
tap
③
top
④
pat
【单选题】
The room had a seating ( ) of over 200.
①
capacity
②
capable
③
capacitive
④
capacious
【单选题】
We will comprehensively promote () education.
①
high
②
enormous
③
religious
④
well-rounded
【单选题】
You can’t really appreciate foreign () in translation
①
literature
②
literate
③
literary
④
literacy