无符号二进制整数10000001转换成十进制整数的是
A. 119
B. 121
C. 127
D. 129
From the text we can learn that Mr. Starr is very ______ as a historian.
A. conservative
B. cunning and shrewd
C. objective and canny
D. critical and aggressive
The phrase "sine qua non" in Para. 5, Line 1 possibly means ______.
A. the essential elements
B. the premise
C. the contribution
D. the advantage
建筑结构的功能要求有( )。
A. 安全性、适用性、面积性
B. 安全性、适用性、经济性
C. 安全性、适用性、美观性
D. 面积性、经济性、美观性