白纹伊蚊在吸血时除了有新生蚊外还有()
A. 新产蚊
B. 经产蚊
C. 已吸血的蚊虫
D. 吸血蚊和卵巢发育的蚊虫
0ne of the limitations of foam as an extinguishing agent is that foam().
A. cannot be made with salt water
B. is heavierthan oil and sinks below its surface
C. is corrosive and to fire fighters
D. conducts electricity
执行紧急任务的特种车辆在确保安全的前提下,有哪些特殊通行权?
狂犬病病毒是一种嗜神经病毒,是引起()和()狂犬病的病原体。