上浆种类一般有()、全蛋浆、干粉浆、及苏打浆等。
A、蛋泡浆
B、麻辣浆
C、蛋清浆
D、酵母浆
参考答案:C
电子枪射出的电子速度是107m/s,垂直进入磁感应强度为0.3T的磁场,此时电子受到的洛仑兹力大小是______N,洛仑兹力的方向与电子速度方向______.(元电荷e=1.6×10-19C)
.Many parents think it will be of great use for their children to ______ from home and earn their own living.
A.run away
B.take away
C.keep away
D.get away