下列对乳牙的论述中错误的是() A.乳牙患龋率低 B.完整的乳牙列有助于儿童的消化吸

题型:单项选择题 A1/A2型题

问题:

下列对乳牙的论述中错误的是()

A.乳牙患龋率低

B.完整的乳牙列有助于儿童的消化吸收

C.健康的乳牙能刺激颌骨的正常发育

D.乳牙缺失是造成牙畸形的原因之一

E.位置正常而健康的乳牙可引导恒牙的正常萌出

考点:口腔五官科主治医师口腔修复基础知识口腔修复主治医师基础知识考前冲刺一
题型:单项选择题 A1/A2型题

最易引起间质性肺炎改变的致病菌是()

A.肺炎链球菌 

B.葡萄球菌 

C.铜绿假单胞(绿脓)茵 

D.克雷白杆菌 

E.肺炎支原体

题型:单项选择题 A1/A2型题

阅读下面短文,根据以下提示:1)汉语提示,2)首字母提示,3)语境提示,在每个空格内填入一个适当的英语单词,并将该词完整地写在右边相对应的横线上。所填单词要求意义准确,拼写正确。

Jenny is my best friend. Believe it or not, although we are not twins,

we are very much a     and we tell each other everything. So well do   小题1:______________

we get along_______ I trust her more than anyone else. But the first time   小题2:______________

I met her in the local library _________I was doing some revision for an   小题3:_____________

oral exam , I was full of a        because people kept disturbing me.  小题4:_____________

The last straw was when I heard Jenny ________(唱歌) loudly behind me.  小题5: ______________

So I glared _________her blaming her selfishness angrily, for which I felt  小题6: _____________

_______(羞愧) when she took trouble to bring my textbook I left behind   小题7:_____________

around for me. To be honest, I was deeply i      by her kindness and  小题8:____________

tolerance(宽容). It’s because she forgave all my s        that I am       小题9: _____________

lucky enough to avoid _________(丢失) such a true friend.               小题10:_____________

题型:单项选择题 A1/A2型题

下列加重剂中,对钻具、泵配件等磨损最严重的是()。

A、石灰石粉

B、重晶石粉

C、碳酸钡粉

D、磁铁矿粉

题型:单项选择题 A1/A2型题

下面是有关PC机性能的叙述,其中错误的是( )。

A.系统总线的传输速率对计算机的输入、输出速度没有直接的影响

B.高速缓存(cache)的功能是用来减少CPU等待的时间,提高系统速度

C.主存的存取周期是指从存储器中连续存取两个字所需要的最小时间间隔

D.系统的可靠性常用平均无故障时间(MTBF)和平均故障修复时间(MTTR)表示

题型:单项选择题 A1/A2型题

除尘器的维护管理要注意哪些问题?

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