Kussmaul征常见于（） A.病毒性心肌炎 B.结核性胸膜炎 C.渗出性心包炎

以下哪一个选项不符合癌症疼痛药物治疗的合理剂量原则（）

A.从小剂量开始，逐步加量

B.以"需要"为基础，临时给药

C.维持血液中药物的有效药物浓度

D.避免耐药性和成瘾性的发生

E.避免毒副作用

微波设备搬迁前应制定详细的搬迁计划、申请停电路对间，提前做好新机房的()准备工作。

A.天馈线系统

B.电源系统

C.走线架安装

D.线缆的布放

E.通道主要指标测试

一个生活在北方牧区的家庭，在2～3月份发现3岁男童出现膝关节部位肿胀，下地行走困难，成人下肢皮肤有出血点，牙龈出血。

该家庭出现这种问题，估计生活中缺乏（）。

A.户外活动

B.蔬菜和水果

C.动物性蛋白质

D.食盐

E.阳光照射

For users, microkernel technology promises (90) , compact and sophisticated operating systems that are typically (91) across a range of hardware platforms. These operating systems will be customizable to let users run multiple operating system and application "personalities" on top of a single microkernel (92) .
Microkernel based systems can provide this flexibility because the core operating system functions are (93) from the large number of utilities, features and extensions that are layered on top of them. As a result, updating and maintaining operating system is easier, since developers don’t have to modify the (94) every time they must acid a new feature.

A．slow

B．fast

C．quickly

D．speed

求函数

在闭区域D=(x，y)|x²+2y²≤4上的最大值与最小值．