按菌体的轮廓、基本形成,可将细菌分成球菌、杆菌和螺旋菌。球菌的直径约() ["A.0.5-1m","B.0.3-2m","C.1-2m","D.1-5m"]
货车侧梁破损合计够()为车辆大破。
当材料的软化系数为()时,可以认为是耐水材料。 [">0.85","<0.85","=0.85",">0.95"]
材质相同的A.B两种材料,已知它们的表观密度ρ0A>ρ0B,则A材料的保温效果比B材料()。 ["好","差","差不多","不能确定"]
微生物不具备的特点是:() ["A.繁殖快","B.不易变异","C.易培养","D.分布广,种类多"]
货车中梁破损合计够(2根)()为车辆大破。