产硫化氢的致病菌是() ["鼠伤寒杆菌","大肠杆菌","痢疾杆菌","变形杆菌","肺炎杆菌"]
专性厌氧生长的细菌是() ["破伤风梭菌","空肠弯曲菌","幽门螺杆菌","脆弱类杆菌","葡萄球菌"]
IMViC试验主要用于区别下列哪两种病原菌() ["产气杆菌","破伤风梭菌","葡萄球菌","大肠杆菌","肺炎球菌"]
在方向观测法中,2C互差是___________各方向之间是_____________。
大多数细菌生长繁殖的最适pH值范围适() ["4.0~6.0","5.5~6.5","7.2~7.6","8.0~9.0","8.4~9.2"]
地面上有A、B、C三点,已知AB边的坐标方位角为35º23′,又测得左夹角为89º34′,则CB边的坐标方位角为_____________。