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问题 单项选择题

对于文丘里面罩。错误的说法是

A．当氧流量及侧孔大小一定时，面罩中氧浓度也是基本恒定的
B．吸入氧浓度在24%～100%可调
C．适用于Ⅰ型及轻度CO2潴留的Ⅱ型呼衰患者
D．氧浓度基本不受患者呼出气影响
E．应保证良好的湿化

答案

参考答案：B

补全对话，情景问答

补全对话，每空一词。

W : Welcome    1    our talk show.

M : Thank you      2     are we going to talk about?

W : What   3    fashion?

M : Good! I'd like to talk about this topic.

W : These days. many people color their hair yellow. brown. even green and red . what do you  4     of it?

M : Oh. this   5   is hard to answer. For me .black hair looks more    6    because we chinese have black eyes. black hair goes   7   with black eyes.

W : Right .but different styles can     8    others who you are fashion changes with the times. Modem people want to show their     9    styles. In fact. colored hair cooks cool.

M : Maybe you are right. But I just want to say you teenagers are     10    from us. That's all.

W: Can we talk about something else?

1.             2.              3.              4.               5.            

6.           7.             8.             9.               10.          
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单项选择题

对于风力机检测系统，机组状态检测不包含下述哪项？（）

A、转速

B、风速

C、温度
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