对疑似高致病性禽流感病例,当地动物防疫监督机构应当及时采集病料送省级动物防疫监督机构实验室进行检测,检测结果为阳性的,可认定为确诊病例。
参考答案:错
Americans are nervous ____________ the prospect of a nuclear-armed Iran, but also worry
__________ the ability of the United States and the United Nations to deal with the situation.
A.about; about
B.to; about
C.for; about
D.for; for
单层铝板、烽窝铝板、铝塑复合析和不锈钢板在制作构时,应四周(),金属板面较大时应在板背面按需要设置()。