A.public delegate int PowerDeviceOn(bool, DateTime);
B.public delegate bool PowerDeviceOn(Object, EventArgs);
C.public delegate void PowerDeviceOn(DateTime);
D.public delegate bool PowerDeviceOn(DateTime);
第1题:

A.A
B.B
C.C
D.D
第2题:



A.A
B.B
C.C
D.D
第3题:
A.public delegate int PowerDeviceOn(bool result, DateTime autoPowerOff);
B.public delegate bool PowerDeviceOn(object sender, EventArgs autoPowerOff);
C.public delegate void PowerDeviceOn(DateTime autoPowerOff);
D.public delegate bool PowerDeviceOn(DateTime autoPowerOff);
第4题:

A.A
B.B
C.C
D.D
第5题:


A.A
B.B
C.C
D.D