VHF-DSC采用的调制方式为()
A、F2B
B、F3E
C、J2B
D、F1B
参考答案:A
---Where did you meet him?
---It was in the hotel ______ he stayed ______ I met him.
A.where , that
B.that, where
C.where, where
D.that, that
把有限的卫生资源配置到最能产生社会效益和经济效益的做法是体现()
A.公平公正原则
B.优先原则
C.效率、效益原则
D.价值原则
E.不伤害原则