()丁典被拷打后四更天来了四个刺客,被丁杀了几个? ["一","二","三","四"]
()丁典告诉狄云“神照经”是天下哪两最的功夫? ["外力最强","内功最强","最奥妙","速度最快","杀伤力最强"]
患者男性,44岁,有10年饮酒史,8年前曾患肝炎,CT示肝脏左叶和尾叶增大,方叶小,肝裂宽,肝表面不光整,肝内密度不均,呈小灶性略低密度区,增强后早期无明显强化,但延迟8min扫描,肝内密度基本均匀,同时脾门及贲门周围见团状软组织影。脾门及贲门周围团状软组织影应考虑:() ["副脾","增大的淋巴结","曲张的侧支循环血管","肿瘤组织蔓延","增大的胰尾"]
煤矿井下可用电机车架空线作照明电源。
下列关于脾梗死的说法哪一项是错误的:() ["多发生于脾边缘包膜下","梗死灶可出现增强","大小不等,单发或多发","病灶基底部贴近被膜,尖端向脾门","梗死后可致脾轮廓变形"]
一根长L=10m的钢制蒸汽管道,当由常温t1=20℃升高到饱和温度t2=194℃时,钢的线膨胀系数α=0.000012℃-1,试计算其伸长量ΔL是多少?