整流器输出中仍含有纹波及谐波电压,由于蓄电池对()电压呈现极小内阻,因此对()电压具有旁路作用,既()作用。
参考答案:低频谐波;纹波;平滑滤波
短文填空。
Failure is a common thing in our life. Everything has 1 possible results: success or failure. People all
over the world like 2 , but there is still failure in our life.
What do you think of failure? 3 do you deal with failure? Different people have different 4 on
failure. Some people consider it as a good thing, because they can learn a lesson 5 it. Then they try their
best to find the 6 for failure, and correct what is wrong. So they can do it better next time. But some
people regard it 7 a bad thing. They lose their 8 . Also they are discouraged. Finally they give it up.
Which opinion is right? How about the 9 one? People remember: Failure is the 10 of success. When
you have failure in your life, please find out the reason for failure and try your best to do it better next
time.
对长期进行肌内注射的患者,护士在注射前要特别注意()
A.询问患者有无过敏史
B.针梗不可全部刺入
C.患者体位的舒适
D.认真消毒患者局部皮肤
E.评估患者局部组织状态