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若f(v)为麦克斯韦气体分子速率分布函数,N为分子总数,m为分子质量,则的物理意义是()。
移动性浊音阳性提示腹水量是()。
提升机的拖动系统不包括()。
党的十八届四中全会决定,要完善惩治贪污贿赂犯罪法律制度,把贿赂犯罪对象由财物扩大为()。
“满眼风波多闪灼,看山恰似走来迎,子细看山山不动,是船行。”其中“看山恰似走来迎”和“是船衍”所选的参照物分别是()
义齿蜡型装盒要求中,下列哪一项是正确的()
与EBV有关的人类肿瘤主要是()。
患者男,42岁,因“发现左侧睾丸持续增大1年,左侧阴囊疼痛1d”来诊。患者于20年前因左侧隐睾行左侧睾丸下降固定术,自述左侧睾丸降入阴囊后较对侧明显偏小。近1年,患者发现左侧阴囊内睾丸持续增大,无发热、疼痛及尿路刺激症状。1d前,突然出现左侧阴囊疼痛伴睾丸迅速增大。查体:左侧睾丸肿物约6cm×8cm,触痛明显,透光试验(-),有沉重感。该患者需要的进一步治疗是()(提示初步诊断为睾丸肿瘤,高度怀疑胚胎癌,睾丸根治性切除后行腹膜后淋巴结清扫术,发现左侧腹主动脉旁3个淋巴结转移,淋巴结最大直径约为1.5cm。睾丸局部已侵犯白膜,但尚未侵犯精索。)
药物的最小有效量和最小中毒量之间的距离是()
防火墙配置时应确保()服务不开放。
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