机械固定系统的金属锚固件、网片和承托架等,应满足设计要求,并进行()处理。m。
A、防水
B、防锈
C、防火
D、防腐
参考答案:B
Jenny ____ lifestyle. [ ]
A. has a health
B. have a health
C. has a healthy
D. have a healthy
增值税条例第一条所称的个人是指哪些?