关于柱塞阀能量调节机构的以下说法中错误的是:().
A.属于吸气回流式
B.可做成有级调节或无级调节
C.常用电磁阀控制油压驱动
D.多用于小型螺杆式制冷压缩机
参考答案:B
女性,58岁。久站时左腹股沟区胀痛1年余,平卧时无不适。有慢性咳嗽病史。查体:体态肥胖,腹部无压痛,站立时左腹股沟下内侧突起半球形包块,咳嗽时无明显冲击感。
手术方法应选择()
A.麦克凡(McVay)法
B.巴西尼(Bassini)法
C.疝成形术
D.佛格逊(Ferguson)法
E.疝囊高位结扎术
翻译并完成句子:
1. I’m ______________________(盼望着)hearing from you soon.
2. What’s your _________________(对……态度) this problem?
3. The students in our class__________________(分成) six study groups.
4. We should listen to our teachers carefully in class and ________________(避免出错) when doing our homework.
5. The other day, they boy student _________________(承认玩了电子游戏) deep into the night the day before.
6. The man ______________________(刚才提到的) has left .
7. I _______________ work in the countryside______________ work in the city.(宁愿……而不)
8. I’m sorry. But your ticket ___________________(过期了)
9. Ads ____________________(缩写) advertisement.
10. We are not children now. We ________________(不应该再玩了。)