下图中x是一种具有水果香味的合成香料，A是直链有机物，E与FeCl₃溶液作用显紫色。

请根据上述信息回答：

（1）H中含氧官能团的名称是______________，B→I的反应类型为______________。

（2）只用一种试剂鉴别D、E、H，该试剂是__________________

（3）H与J互为同分异构体，J在酸性条件下水解有乙酸生成，J的结构简式为___________________

（4）D和F反应生成X的化学方程式为__________________

SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connections between IBM equipment. A varietion of the (71) protocol called NRM is essentially the same as SDLC. SDLC is (72) protocol like HDLC, Frame Relay or X.25.An SDLC network is made up of (73) that controls all communications, and (74) . It is capable of (75) operation, but almost all practical applications are strictly half duplex.

（74）是（）

A. a primary station

B. one or more primary stations

C. a secondary station

D. one or more secondary stations