铝合金门窗、塑料门窗制作安装工程量均按()计算。
甲氨蝶呤的抗肿瘤作用为() ["阻止脱氧腺苷酸的合成","阻止嘌呤核苷酸的合成","阻止二氢叶酸还原成四氢叶酸","阻止肌苷酸转变为鸟苷酸","阻止肌苷酸转变为腺苷酸"]
产生肝肺综合征的根本原因是() ["贫血","肺内毛细血管扩张","肺通气功能下降","内毒素进入肺循环","呼吸道黏膜水肿"]
急性脑血管病(卒中)中,发病最快的是() ["高血压脑病","脑出血","脑血栓形成","脑栓塞","蛛网膜下腔出血"]
丙型肝炎的潜伏期为() ["1~6月","2~6月","2周~6月","3~6月","1~3月"]
真空闪蒸系统能够建立真空的设备是()式真空泵。