标定硫酸标准滴定溶液所需基准试剂的处理条件是（）。
A.280~290C
B.130C
C.105C
D.270~300C
参考答案：D
内地与台湾之间的贸易，主要经过香港转口。 ( )
New Zealand's universities offer a wide __ of courses in many fields, including the arts, economics, communications and technology.
A．range
B．process
C．trend
D．bunch
