当吸入氧化亚氮浓度恒定时,其被血液摄取的速率()
A.恒定
B.逐渐增加
C.逐渐减少
D.依赖于温度
E.与浓度无关
参考答案:C
I don't quite _______ what you said at the meeting. [ ]
A. miss
B. hear
C. have
D. understand
以下哪位西汉皇帝没有庙号?()
A.汉文帝
B.汉武帝
C.汉宣帝
D.汉景帝