青年患者，右肺下叶背段见一薄壁空洞。应首先考虑（） A.先天性_爱下问搜题

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问题单项选择题

青年患者，右肺下叶背段见一薄壁空洞。应首先考虑（）

A.先天性肺囊肿

B.肺结核

C.肺脓肿

D.肺癌

E.肺包虫囊肿

答案

参考答案：B

完形填空

完形填空。
     Bill and Liu Mei are good friends. Bill is    1   Canada. He is thirteen    2 . Now he is    3    Beijing
No.10 High School. He is in Class One, Grade One.    4    phone number is 8695-4838. Liu Mei is from
Fujian, China.    5    English name is Nancy. She is thirteen,    6   . She is    7    Class Three, Grade One.
Her phone number    8     8876-5432. They    9    in the   10    class.

( )1. A. to
( )2. A. year old
( )3. A. at
( )4. A. He
( )5. A. Her
( )6. A. too
( )7. A. at
( )8. A. are
( )9. A. are
( )10. A. same

B. from
B. years old
B. from
B. Her
B. His
B. years old
B. in
B. am
B. aren't
B. some

C. at
C. years olds
C. in
C. His
C. She
C. year
C. from
C. is
C. is
C. any

多项选择题

有载分接开关操作机构发生连调的原因是（）。

A、顺序接点调整不当不能断开或断开时间过短；

B、交流接触器铁芯有剩磁或结合面上有油污；

C、按钮接点粘连；

D、环境温度过高。