当丢掉一个应答器的数据时就会影响列车的正常运行
参考答案：错
46. With his own _____ Huang Jiguang, a fighting hero _____ the enemy's machine gun.
A．life; blocking
B．body; covered
C．body; blocked
D．body; stop
根据条件计算．
①圆柱底面积15m2，高3m，求体积．
②圆锥底面半径3分米，高9分米，求体积．
