海洋测量定位中,双曲线法属于()定位方法。
A.光学
B.无线电
C.卫星
D.水声
参考答案:B
It is reported that Beijing and Zhangjiakou(张家口)will compete to host the 2022 Winter Olympics, which will _____ China’s social development.
A.interest
B.benefit
C.gain
D.contain
脑出血最常见的病因是
A.脑动脉炎性管壁坏死
B.高血压脑动脉硬化
C.脑动脉瘤破裂
D.脑瘤出血
E.动静脉畸形