治疗小腿丹毒应首选
A.土霉素
B.红霉素
C.庆大霉素
D.氨苄西林
E.青霉素
参考答案:E
对于国际标准中通用的基础性标准、试验方法标准应当优先采用。
The INMARSAT system has five major components, they are:()
A.Space Segment, NCC, RCC, SES, and CES
B.Space Segment, a satellite system, C system, NCC and NCS
C.Space Segment, NCC, NCS, CES and SES
D.A system, C system, satellite system, earth stations and NCS