更多"[单选题]difference("的相关试题:
[单选题]difference(A,B,C)表示求集合A和B的差集C。若A={b,c,d},B={c,e},则difference(A,B,C)运算后C=（ ）。
A.{b,c,d,e}
B.{c}
C.{b,d}
D.{b,c,c,d,e}
[单选题]The potential difference between two conductors which are insulated from each other is measured in
A.volts.
B.amperes.
C.coulombs.
