A.P大于等于0.1225MPa B.P大于等于0.1961MPa C.P大于等于0.3923MPa
A.4A B.4.44 C.0
A.I(A)=5(sinωt-150) B.I(A)=5(sinωt+90) C.I(A)=5(sinωt+30)