患者，男，16岁。发热腹痛，里急后重，大便有脓血，舌质红，脉滑数。用药应首选的是（）

如图所示，带电粒子以水平速度垂直进入正交的匀强电场和匀强磁场区域中，穿出电磁场区域时速度为，电场强度为E，磁感应强度为B，则粒子的径迹、与的大小关系为：（    ）

A．要使粒子能沿直线运动，正电荷应从左边射入，负电荷应从右边射入

B．当时，粒子沿直线运动，且

C．当时，粒子沿曲线运动，且

D．当时，粒子将向上运动

混作

探方

In (85) software, one question of near-universal interest is how rapidly Windows NT, which began shipping last summer, will be (86) in the marketplace and for what uses. For the most part, observers are (87) about the operating system’s long term prospects, but expect it to remain on (88) rather than desktops during 1994, saying that it won’t become a mainstream product until (89) PCs typically have 16 to 24 MB of RAM, which is unlikely to happen next year.

（87）是（）

A.applications

B.accepted

C.clients

D.enthusiastic

E.servers

F.desktop

G.systems

H.replaced

当量相同的核武器空爆时总的杀伤范围小于地爆。