压力侧牙槽骨吸收,牵张侧牙槽骨沉积,说明()。 A.前列腺素有较强的促破骨细胞骨吸收

题型:单项选择题 A1/A2型题

问题:

压力侧牙槽骨吸收,牵张侧牙槽骨沉积,说明()。

A.前列腺素有较强的促破骨细胞骨吸收作用

B.机械力可引起骨组织中基因表达的改变

C.成骨细胞参与破骨细胞分化成熟的调节

D.机械力在牙周组织改建中起作用

E.机械力可引起细胞骨架的改变

考点:口腔医学基础知识口腔医学基础知识题库
题型:单项选择题 A1/A2型题

One day a dentist was starting his morning work. Suddenly a man ran in. His face was red and he could only say “Quick! Quick!” The dentist thought he must be very ill. His assistant helped to make the poor man sit in a chair. The dentist gave the man some medicine to make him sleep. Then, he looked into the man’s mouth and pulled out all the bad teeth. As soon as the man woke up, he said in a low voice, “Quick, doctor, quick.”

“It’s all right now,” the dentist told him. “It’s over.”

“You don’t understand,” said the man, “I came to tell you your house is on fire.”

根据短文内容,判断下列句子正(T)误(F)。

(    )1.The story took place (发生) in the afternoon.

(    )2.When the man ran in, the dentist thought he must be ill.

(    )3.The man went to sleep after he took some medicine.

(    )4.The dentist pulled all the teeth out of the man’s mouth.

(    )5.The man ran in to tell the dentist that his house was on fire.

题型:单项选择题 A1/A2型题
李永村计划修一条长30千米的柏油路,第一周修了
1
5
,第二周修了
2
3
,第三周还要修多少千米才能按期完成任务?
题型:单项选择题 A1/A2型题

隧道施工时的辅助坑道有横洞、斜井、竖井和()。

题型:单项选择题 A1/A2型题

关于海水及其运动,下列说法错误的是:

A.海水的冰点温度比淡水低

B.北海道渔场位于寒流与暖流交汇处

C.波罗的海是世界上盐度最高的海域

D.海浪、潮汐和洋流是海水运动的主要形式

题型:单项选择题 A1/A2型题

试述电动装卸机械金属结构故障原因。

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