【单选题】肠道杆菌的微生物学检查中,下列哪项对菌种鉴定无意义( )
【判断题】角焊缝最大计算长度在承受静载或间接动荷载时应不大于70hf,承受动荷载应不大于40hf。
【判断题】角焊缝最大计算长度在承受静载或间接动荷载时应不大于70hf,承受动荷载应不大于40hf。
【简答题】根据现代组织设计原则,举例说明其在组织设计中的应用。
【简答题】A driver should __ the road when . A.concentrate on; drive B.concentrate in; driving C.concentrate to; drove D.concentrate on; driving
【单选题】Never concentrate all your attention on one or two problems, ______ others.
【判断题】角焊缝最大计算长度在承受静载或间接动荷载时应不大于70hf,承受动荷载应不大于40hf。
【单选题】We must ___ on our study..