具有镇吐作用的是（） A.东莨菪碱 B.安定 C.巴比妥钠 D.哌替啶 E.氟哌利多 发布时间：2017-05-05 07:23 │ 来源：www.tikuol.com 题型：单项选择题 B型题 问题： 具有镇吐作用的是（）A.东莨菪碱B.安定C.巴比妥钠D.哌替啶E.氟哌利多
题型：单项选择题 B型题 35．Applications put computers to pratical business (1) , but below the (2) it’s the heart of an operating system—the kernel that provides the technical wizardry to juggle multiple program, connect to networks and store (3) . A traditional kernal provides all the functions for applications. The kemal (4) memory, I/O devices and parcels out processor time. The kernel also supports security and fault (5) , which is the ablity to recover automatically when parts of the system fail.(3)A．graphicsB．dataC．textD．image 查看答案