水稻立枯病是由于()中的病菌引起的病害。
用变阻器起动的直流电动机,其内阻R0为1Ω,电流为12.35A,接在220V线路上工作,如限制起动电流不超过正常电流的两倍,则起动电阻应不小于多少?
Which statement is TRUE in an overtaking situation(). ["One vessel is approaching another vessel from more than 20° abaft the beam","It is the duty of the vessel being overtaken to get out of the way","Any later change of bearing between the two vessels shall not make the overtaking vessel a crossing vessel","All of the above"]
请选出属于弗里茨.海德的作品() ["《人际关系心理学》","《心理研究》","《格式塔心理学》","《心理学评论》"]
我国银行保卫工作中的重要任务历来都是()。 ["防火","防盗","防骗","防抢"]
药害补救办法()、()、()。