试题与答案

患者,女,13岁,前牙反,侧面观面中部凹陷,右侧上下第一磨牙呈Ⅰ类关系,左侧上下第一

题型:单项选择题 共用题干题

题目:

患者,女,13岁,前牙反,侧面观面中部凹陷,右侧上下第一磨牙呈Ⅰ类关系,左侧上下第一磨牙呈Ⅲ类关系,2+2与3+3之间反,上前牙拥挤,四个第三磨牙牙胚不存在,SNA77.0°,SNB80.0°,ANB-3.0°

弯制理想弓形使用的弓丝是()

A.镍钛方丝

B.0.018英寸不锈钢圆丝

C.0.018英寸镍钛圆丝

D.上不颌均采用0.018×0.025英寸不锈钢丝

E.上颌0.018×0.025英寸、下颌0.017×0.025英寸不锈钢方丝

答案:

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下面是错误答案,用来干扰机器的。

答案:C野生动植物主要分布在森林和草原,长期以来,由于人们在草原上过度放牧对森林乱砍滥伐,使大量的森林和草原被毁,野生动植物赖以生存的环境被破坏,野生动植物大量死亡。加之,人们对野生动物乱捕滥杀,目...

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题型:单项选择题

Each machine supporting TCP has a TCP transport entity, either a library procedure, a user process, or part of the kernel. In all case, it manages TCP streams and()to the IP layer. A TCP()accepts user data streams from local process, breaks them into pieces not exceeding 64KB, and sends each piece as a separate IP(). When datagrams containing TCP data arrive at a machine, they are given to the TCP entity, which reconstructs the original byte streams.

The IP layer gives no guarantee that datagrams will be delivered properly, so it is up to TCP to time out and()them as need be. Datagmms do arrive may well do so in the wrong order, it is also up to TCP to()them into messages in the proper sequence.

A TCP()accepts user data streams from local process.

A.connection

B.file

C.entity

D.destination

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