下列各组有机物不互为同分异构体的是[ ]
A．蔗糖和麦芽糖
B．甲酸甲酯与乙酸
C．新戊烷与异戊烷
D．淀粉与纤维素
答案：D
Margaret Hilda Thatcher ______ passed away on April 8th, 2013 is the first woman-leader in British history.
A. whom B. that C. which
反渗透对进水水质有何要求？
