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【单选题】
用短圆柱销作为工件上圆柱的定位元件时,可消除工件的 自由度。A.
两个
B.
三个
C.
四个
D.
五个
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举一反三
【单选题】(以下3题共用题干)女,8个月。因发热,咳嗽咳痰2天,气急伴发绀2小时入院。体检:体温38.9°C,呼吸80次/分,双肺闻及细湿啰音,心率180次/分,心音低钝,肝肋下4cm。该患儿的临床诊断可能是
A.
毛细支气管炎
B.
腺病毒肺炎
C.
支原体肺炎
D.
支气管肺炎并心衰
E.
肺炎并中毒性脑炎
【单选题】The vitamin which can be used for treatment of hypercholesterolemia is:
A.
Thiamine
B.
Niacin
C.
Pyridoxine
D.
Vitamin B
【单选题】Vitamin D is necessary for health and growth. It is used by the body to form. strong bones and teeth. That is why growing children need it. Vitamin D is also called the sunshine vitamin. It forms when...
A.
need as much vitamin D as children
B.
need less vitamin D than children
C.
need more vitamin D than children
D.
need no vitamin
【简答题】A．Vitamin C. B．Vitamin D. C．Vitamin A. D．B vitamins
【简答题】A．It can be used to cure the scar. B．It is rich in water and Vitamin A. C．It can reduce the wrinkles of the face. D．It is effective in tightening the skin.
【单选题】Which is the most abundant circulating form of vitamin D and the commonly used index for assessing vitamin D status?
A.
25-(OH)D
B.
Vitamin Ds
C.
Vitamin D,
D.
1,25-(OH)2D
【单选题】Vitamin D is used for preventing
A.
deformity of bone
B.
dry eye
C.
glaucoma
D.
the common cold
【简答题】患者叶某，男，58岁，有2型糖尿病、高血压病病史。实验室检查：血肌酐746.0umol/L，尿素40.20umol/L；肾脏彩超提示双肾多发囊肿，双肾实质回声增强，皮髓质分解不清。血肌酐升高20余天。确诊为慢性肾衰竭（尿毒症期）；肾性贫血。医嘱予以血液透析治疗。首次透析护士给予股静脉直接穿刺建立临时性血管通路，在血液引出到体外循环血路管及透析器后，出现血流量不足，护士给予调整穿刺针位置以求最佳血流...
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