问题
多项选择题
| 患者王某，A1缺失，A2B1做基牙，采用PFM全冠桥修复。 |
技师对金属基底冠进行粗化处理时，其喷砂压力不应为
A．＜2×105Pa
B．(2～4)×105Pa
C．(5～6)×105Pa
D．(6～7)×105Pa
E．(7～8)×105Pa(8～9)×105Pa
答案
参考答案：A,C,D,E,F
搜题请搜索小程序“爱下问搜题”
| 患者王某，A1缺失，A2B1做基牙，采用PFM全冠桥修复。 |
技师对金属基底冠进行粗化处理时，其喷砂压力不应为
A．＜2×105Pa
B．(2～4)×105Pa
C．(5～6)×105Pa
D．(6～7)×105Pa
E．(7～8)×105Pa(8～9)×105Pa
参考答案：A,C,D,E,F
| 完形填空。 | ||||
| I can't remember when I started collecting litter. But it was when I got tired of (1)_____ litter nearby and realized that (2)_____ was going to pick it up. I live near a (3)_____ in Enshi, Hubei Province. I can walk there in three (4)_____! I (5)_____ love going there to play with my dog. But one day there was so much litter there that I became very unhappy. I decided I had to clean up the forest. I wanted to (6)_____ happy going there again. I made my (7)_____ trip to clean the forest that afternoon. I took a big black rubbish bag with me. Ten minutes (8)_____ starting to pick up litter, my bag was full! It had cans, bottles, broken glass and newspapers in it. From then on, I went to the forest four times a year to pick up the litter. I often (9)_____ there for three hours. It makes me feel (10)_____ to do something for the environment. After each trip, I (11)_____ all the litter that I've found. If (12)_____ of it is recyclable (可回收的), I keep it. I can't (13)_____ why people drop litter. But I will keep picking it (14)_____ they stop dropping it. I know I am only doing a small bit to help (15)_____, but I still think it is important. | ||||
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