【单选题】下列试剂处理甲苯,可以得到苄基溴的是( )
【单选题】高分子材料链段开始运动的温度称为什么温度?
【判断题】pH越大,对准确滴定越有利,因此在进行EDTA 滴定时pH越大越好。
【单选题】The unemployment rate in this city ____ from 7% to 6% in the past two years.
【单选题】The city ________ 6 billion yuan to preserve the character of the old town, mainly to divert water from the Taihu Lake and the Yangtze River to supply the waterway systems of the old town.
【判断题】为避免销售人员离职导致客户流失,企业的客户档案应由多个部门共同管理。
【单选题】The underlined word“it”(1ine 3,para.6)refers to___.
B.
the city committee for the arts
C.
Sutton Theatre Company
D.
Performing Arts Society
【单选题】一芳香含氮有机化合物,与NaNO2 + HCl反应生成黄色液体,它是哪一类化合物?