某正弦交流电压的初相角为φ=π/3,当t=0时的瞬时值为()。
A.正值
B.负值
C.零
D.最大值
参考答案:A
Do you have any idea of how many gold medals China won in the 16th Asian Games, ______ was hosted in Guangzhou?
A.as
B.whose
C.that
D.which
医务人员在医院外,发现患者而加以治疗,这在法律上属于()
A.多管闲事
B.见义勇为
C.强制诊疗
D.非法行医
E.无因管理