【判断题】结型场效应管的漏极d与源极s,和三极管的集电极c与发射极e一样,不可以互换端子。
【多选题】病历摘要:某男,28岁,右眼红痛、视力下降三天,不伴有头痛,无恶心呕吐症状,在当地医院口服抗菌素与止痛药,症状无明显改善,曾自行应用过消炎类眼药水。否认眼外伤史与药物过敏史,家族中无类似病史。你认为采用何种措施较为妥当?()提示:病者在裂隙灯下,角膜轻度水肿,角膜后KP阳性,前房可见明显闪辉,瞳孔极小,部份后粘连,结膜为睫状充血。血常规与尿常规无异常,胸片未见异常。
【简答题】患者男,45岁,农民,右眼被谷粒击伤后红痛伴视力下降15天。视力0.02,刺激征+,混合充血,角膜中央偏鼻下方有5mm×4mm灰白色致密的斑块状隆起病灶,边缘有沟状凹陷,深层基质有羽毛状浸润,前房灰白积脓高约2mm。患者最可能的初步诊断是A、细菌性角膜溃疡 B、真菌性角膜溃疡 C、病毒性角膜溃疡 D、棘阿米巴角膜溃疡 E、蚕食性角膜溃疡 下列处理措施不恰当的是A、角膜刮片染色或培养寻找病原体 B、...
【单选题】Heat and Health Extremely hot weather is common in many parts of the world. Although hot weather just makes most people hot, it can cause medical problems-and death. Health experts say that since the ...