断电器触点烧蚀,发动机排气呈黑色。
参考答案:对
if one side fails to observe the contract,the other side( )cancel it.
A.be entitled to
B.entitled to
C.being entitled to
D.is entitled to
单词"telephone"的意思是()。
A.电视
B.电话
C.传真机
D.电脑