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【单选题】
An 18-year-old woman went to her physician because she had noticed a swelling in the midline of her neck. She said she had first noticed this swelling 3 years previously, and it had gradually increased in size. On physical examination, a small swelling was found in the midline of the neck; it measured about 0.5 inch (1.25 cm) in diameter. It was situated just below the body of the hyoid bone, was soft and fluctuant, and moved upward on swallowing. Nothing else abnormal was discovered. The physician made the diagnosis of thyroglossal cyst based on the following symptoms and signs except which?A.
The swelling was not hard
B.
The swelling was fluctuant
C.
The swelling was located in the midline of the neck
D.
A thyroglossal cyst is always found below the hyoid bone
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皮皮学刷刷变学霸
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【单选题】国民党基层组织空虚的表现之一是()。造成的原因主要有二:一是人才上涌,一是人才外流。基层党部留不住人才。人才上涌与近代以来知识分子都市化的时代潮流有关。人才外流,则是党权低落和党政失衡的结果。
A.
人才过剩
B.
人才缺乏
C.
缺乏管理
【单选题】关于排尿反射，下面哪项是错误的?
A.
排尿反射初级中枢位于脊髓
B.
排尿反射存在正反馈调节
C.
脑的高位中枢对脊髓排尿中枢有控制作用
D.
交感神经兴奋时，促进排尿
【简答题】用于成批生产的车床,主轴转速 n 电 = 45 ~ 500r/min ,为简化机构采用双速电动机, n 电 = 720/1440r/min ,试画出该机床的转速图和传动系图。
【单选题】下面是关于交换式集线器与共享式集线器的叙述,其中错误的是( )。
A.
交换式集线器从发送结点接收数据后,直接根据接收方MAC地址发送给接收方,而不向其他结点发送数据,从而提高网络的整体数据传输速度
B.
若交换式集线器所有端口及所有结点网卡的带宽均为100M,则每个结点独享100M。
C.
若共享式集线器所有端口及所有结点网卡的带宽均为100M,则每个结点独享100M。
D.
若共享式集线器所有端口及所有结点网卡的带宽均为100M,则整个网络所有结点共享100M。
【单选题】What purpose does NOT post-listening activities serve?
A.
Helping students relate the text with their personal experience.
B.
students the opportunities of extending other language skills.
C.
Practicing students’ ability of matching the pre-listening predictions with contents of the text.
D.
Giving the answer directly to students and not to explain.
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