牙本质龋的病理变化不包括() A.牙本质小管扩张,充满细菌 B.牙本质小管断裂,出现

题型:单项选择题 A1型题

问题:

牙本质龋的病理变化不包括()

A.牙本质小管扩张,充满细菌

B.牙本质小管断裂,出现裂隙

C.牙本质小管融合,出现崩解

D.牙本质小管溶解,钙盐沉积

E.牙本质小管矿化,呈串珠状

考点:口腔执业助理医师龋病龋病题库
题型:单项选择题 A1型题

关于梗死的描述正确的是()。

A.只要动脉栓塞即可引起梗死

B.必须在严重淤血的情况下引起动脉栓塞才能引起梗死

C.必须有双重血液供应出现动脉栓塞才可引起梗死

D.因动脉血供中断引起局部组织缺血性坏死

E.疏松组织动脉栓塞即可引起梗死

题型:单项选择题 A1型题

阅读理解。

     The following are four kinds of medicine at home. We should know how to use them. Never make any

mistakes.  

     (1) Take the medicine with water. One pill (片) every eight hours. For further nighttime and every

morning, take two pills at bed time. Don't take more than six pills in 24 hours. For children six or twelve

years old, give half the adult dosage (剂量). For children under six years old, go to ask your doctor. Take

less dosage if restlessness or sleeplessness happens.  

     (2) Each pill of the medicine is taken three times each day for persons more than 14 years old. As usual,

a pill 6:00 a. m. before breakfast, one before 11:00 and one before sleep. Not for children under six years

old and old persons with heart trouble.  

    (3) The medicine is for a person with a cough. Once two pills a day before sleep for adult. Not take the

medicine without cough. Half for children under 12 years old. Children with a bad cough, go to see a doctor.  

    (4) The medicine is taken three times a day. Once five pills for an adult with a cold. Half the pills for

children under 10 years old. Take the medicine before three meals or before sleep.

1. If a person can't rest and sleep very well after taking the first kind of medicine, he should ________.   

A. take less dosage

B. take more dosage   

C. take two pills at bed time

D. take it again without water

2. If a middle-aged person with a cough wants to be well at home, he'd better ________.   

A. take three pills before sleep

B. stop to take some more pills   

C. go to see the doctor   

D. take two pills of the third kind of medicine before sleep

3. ________ can't take the second kind of medicine.   

A. Children over 12 years old

B. Some adults 18 years old   

C. Some old persons with heart trouble

D. Child over 7 years old

4. When an adult has a cold, he had better ________.   

A. have about over 14 pills of the fourth kind of medicine a day   

B. have six pills of the fourth kind of medicine twice a day   

C. have five pills of the fourth kind of medicine four times a day   

D. have nine pills a day

5. If a boy under 10 years old needs to take the fourth kind of medicine, he has ________.   

A. a cold

B. a cough

C. a serious illness

D. sleeplessness

题型:单项选择题 A1型题

质量为2 kg的质点在xy平面上做曲线运动,在x方向的速度图象和y方向的位移图象如图所示,下列说法正确的是 (    )

A.质点的初速度为3 m/s

B.质点作匀变速曲线运动

C.质点所受的合外力为3 N

D.质点初速度的方向与合外力方向垂直

题型:单项选择题 A1型题

太阳直射点上()

A.昼最长夜最短

B.太阳高度最大

C.昼夜等长

D.夜长昼短

题型:单项选择题 A1型题

交流接触器铜触点因表面氧化、积垢造成()时,可用小刀或细锉清除表面,但应保护触点原来的形状。

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