黄土地基有那些主要不良地质现象？
不符合猩红热特点的是（） ["皮疹间皮肤正常","口周苍白圈","杨梅舌","帕氏线","恢复期蜕皮后无色素沉着"]
麻疹出疹的顺序是（） ["头面-耳后躯干-四肢末端全身","耳后发际-面部-躯干四肢-手掌足底","四肢末端头面-躯干-背部胸部","四肢末端-躯干-头面-耳后发际","四肢末端-头面-耳后发际-前胸后背"]
职业照射的五年平均有效剂量为（）。 ["10Sv","20Sv","50Sv","200Sv","500Sv"]
肾衰竭患儿少尿期死亡的首要原因是（） ["低血钙","低血钠","高血钾","高血镁","高血磷"]
选用铁塔主要考虑那些因素？
