【判断题】省内发生高致病性禽流感疫情期间,要对禽类免疫状况进行监测,对保护率低于70%的禽群要按规范立即组织紧急免疫。
【单选题】下列物质的火灾不可以使用BC干粉灭火器灭火的物质是( )。
【简答题】冯特被称为心理学之父,请问冯特的具体贡献有哪些?你是如何评价这位心理学家呢?
【单选题】省内发生高致病性禽流感疫情期间,要对禽类免疫状况进行监测,对保护率低于()的禽群要按规范立即组织紧急免疫。
【单选题】What is the right time for the guests to leave?
A.
The guests can stay as long as they want to.
B.
The guests usually leave before midnight at a bigger party.
C.
The guests should stay longer to show their respect for the host.
D.
The guests should leave before midnight if the host must work the next day.
【判断题】点焊机器人有直角坐标式、极坐标式、圆柱坐标式和关节式等
【单选题】电器火灾不可以使用的灭火器材是 ( ) 。