— I have a stomachache, doctor.

— Take these pills and you'd better ______ cold food. [ ]

A. eat

B. to eat

C. not eat

D. not to eat

二级负荷用户在负荷较小或地区供电条件困难时，可采用两根6kV及以上高压电缆供电，其每根电缆应能承担( )二级负荷。

A．全部

B．50%

C．80%

D．60%