Compared with his sister, Jerry is even more _____ to, and more easily troubled by, emotional and

relationship problems.[ ]

A. sceptical

B. addicted

C. available

D. sensitive

汽车常用继电器按工作原理可分为（）、干簧继电器、双金属片继电器、电子继电器等多种类型。

A.电磁继电器

B.陶瓷继电器

C.弹簧继电器

D.液晶继电器