关于弧菌科细菌的共性,错误的是()
A.氧化酶阳性
B.对弧菌抑制剂0/129敏感
C.具有极端鞭毛
D.营养要求高
E.发酵葡萄糖
参考答案:B
The magazine was started by Becky, ______ I know. [ ]
A. as far as
B. as well as
C. as soon as
D. as much as
如图所示,t=0时,一小物体从光滑斜面上的A点由静止开始下滑,经过B点后进入水平面(设经过B点前后速度大小不变),最后停在C点.每隔2s测得的三个时刻物体的瞬时速度,记录在下表中.重力加速度g取10m/s2,则物体到达B点的速度为______ m/s;物体经过BC所用时间为______ s.