高层和超高层物业每层楼放置的消防栓(箱)内应配置( )瓶灭火器。A．2 B．4 C

It took a long time for the connection between body temperature and illness _____. [ ]

A. to make

B. to be made

C. making

D. being made

— There are no relative articles on the Internet.What shall we do?

— My God！There are always not any useful articles when you want         .

A．one

B．it

C．that

D．any

患者女，75岁，双下肢瘫痪卧床一年。两天前骶尾部出现3cm×4cm的红色斑，局部麻木疼痛，每2小时翻身1次无缓解。

其功能障碍属于

A．皮肤、皮下组织系统
B．骨骼、关节和肌肉组织
C．新陈代谢
D．泌尿系统
E．心血管系统

以y=C₁e^-x+C₂e^2x+sinx为通解的二阶常系数非齐次微分方程为______．

编制道班旬、月度作业计划应注意什么问题？