铂钴比色法测定水的色度时，色度标准溶液由储备液用蒸馏水或去离子水稀释到一定体积而得。
参考答案：错
解析：色度标准溶液由储备液用光学纯水稀释到一定体积而得。
Alice received an invitation from her boss, _____ came as a surprise. [ ]
A. it
B. that
C. which
D. he
目前使用最广泛的计算机通讯网络是( )
A．CAN B．MAN C．LAN D．WAN
