_____ you are right. [ ]
A. Perhaps
B. May
C. Must
D. May be
答案:A
联想Y480标配的高清摄像头为多少像素,视频聊天可以支持哪种显示格式()
A.200万,720P
B.200万,1080P
C.130万,720P
D.130万,1080P
某混凝土配合比设计中已知单位用水量为180kg,水灰比为0.7,质量砂率为35%,按质量法求单位石子用量为()kg,混凝土表观密度按2400kg/m3计。
A.687
B.733
C.1276
D.1362