感冒与时行感冒的区别在于()
A.体质强弱
B.有无传染性
C.风寒与风热
D.头痛的轻重
E.呼吸道症状突出还是全身症状突出
参考答案:B, E
Though he is ______ orphan, he is leading ______ happy life.
A.an; the
B.an; /
C./; a
D.an; a
以下哪一项是使用ECC内存的好处?()
A.节省成本
B.可纠正缓存错误
C.可纠正内存错误
D.具有较高的尺寸