155 248 339 ( ) A: 248 B: 414 C: 426 D: 428
155 248 339 ( ) A: 248 B: 414 C: 426 D: 428
172
172
In 1803 the United States purchased Louisiana from _____.
In 1803 the United States purchased Louisiana from _____.
用DJ6型光学经纬仪测量某水平角4个测回,各测回的观测值分别为248°32′18″,248°31′54″,248°31′42″,248°32′06″,试求观测值的中误差。() A: ±15.5″ B: ±12.5″ C: ±18.5″ D: ±0.0″
用DJ6型光学经纬仪测量某水平角4个测回,各测回的观测值分别为248°32′18″,248°31′54″,248°31′42″,248°32′06″,试求观测值的中误差。() A: ±15.5″ B: ±12.5″ C: ±18.5″ D: ±0.0″
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
172转换成二进制是
172转换成二进制是
国际网球联合会成立于 A: 1903 B: 1803 C: 1913 D: 1923
国际网球联合会成立于 A: 1903 B: 1803 C: 1913 D: 1923
霍尔效应哪一年发现的? A: 1881 B: 1879 C: 1803 D: 1831
霍尔效应哪一年发现的? A: 1881 B: 1879 C: 1803 D: 1831
172转换成二进制以后是(
172转换成二进制以后是(
4,4,8,22,52,104,() A: 184 B: 172 C: 150 D: 138
4,4,8,22,52,104,() A: 184 B: 172 C: 150 D: 138