“钻木”能“取火”，说明可以改变物体的内能；“烤火”能“取暖”，说明可以改变物体

单室模型静脉注射给药的体内药量随时间变化的关系式是（）.

A．C=k₀(1－e^-kt)/Vk

B．logC’=(－k/2.303)t’＋log(k₀/Vk)

C．logC’=(－k/2.303)t’＋log(k₀(1－e^-kt)/Vk

D．logC=(-k/2.303)t＋logC₀

E．logX=(－k/2.303)t＋logX₀

阅读小天地，读一读，选一选。

      Bob, Jack and Tom are friends. They like different kinds (种类) of food. Bob likes meat. He always eats

meat. Sometimes he eats cabbage. He never eats peas. Jack usually eats onions and soup. He sometimes eats

meat. He doesn't like eggs. He never eats eggs. Tom likes ice cream. He always eats ice cream. He sometimes

eats carrots and peas. He never eats soup.

1. Bob, Jack and Tom are _____________.

A. brothers

B. friends

C. sisters

2. Bob always eats _____________.

A. cabbage

B. soup

C. meat

3. Jack doesn't like _____________.

A. eggs

B. soup

C. ice cream

4. Tom doesn't like _____________.

A. peas

B. eggs

C. soup

5. Tom always eats _____________.

A. meat

B. ice cream

C. eggs

下列哪项不是下肢丹毒的防护要点（）

A.患者应卧床休息

B.患者所用敷料、器械需严格消毒

C.积极治疗脚湿气

D.多饮开水，床边隔离

E.保持患肢下垂位，以防热毒上攻

北方酵米面黄杆菌食品中毒，主要是用 ______然后水洗磨浆，过滤、沉淀、晾干加工成粉制成食品引起的

A．大米加水浸泡1～3天

B．玉米加水浸泡1/3天

C．大米加水浸泡10～30天

D．玉米加水浸泡10～30天

E．大米加水浸泡3～5天

教育实践活动征求意见做到“五必问”是指什么？