请说明铅锡焊料具有哪些优点?
乡(镇)土地利用总体规划公告
患儿男性,5岁。主诉因面部皮损2天伴痒就诊,查体口周、鼻孔附近密集分布粟粒至黄豆大小的薄壁脓疱,周围有红晕,疱液浑浊,呈袋状坠积现象,呈半月形积脓,有的表面已破溃糜烂,有黄痂。最可能的诊断是() ["寻常型脓疱疮","大疱性脓疱疮","深脓疱疮","脓癣","儿童型线状IgA大疱性皮病"]
下列哪项不是固定型药疹的常见部位() ["口唇","口周","龟头","手足背","头皮"]
口腔恶性肿瘤中,预后好、不易发生转移的是() ["鳞状细胞癌","基底细胞样鳞状细胞癌","乳头状鳞状细胞癌","疣状癌","NUT中线癌"]
烟叶类型有哪些?