光缆线路至基站机房终端引入时，原则上采用杆路与基站机房墙壁间吊线方式，尽量不要软吊，可借用铁塔等做支撑物。
参考答案：错
在肉制品中加入______不但可以抑制二甲基亚硝胺的形成，而且还不会降低亚硝酸盐的发色和抗菌作用。
A．维生素A
B．维生素C
C．醋
D．碱
In his opinion, the Practice was completely ridiculous, it was welcomed by the students. [ ]
A. yet
B. or
C. and
D. for
