在用比例调节器组成的控制系统中，系统受到扰动后，稳态时其静态偏差较大，其可能的原因是

阅读短文，判断正(T)误(F)。

Dear aunt,

    Yesterday my mother and I went to the Summer Palace. I was very happy. My mother was very happy,

too. And my mother met her students. Then they went to the Summer Palace with us. We took lots of

photos there. Then we bought some cakes and five bottles of juice. But Lily dropped her cakes. She was

sad.

    Love,

    Lucy

( ) 1. Lily wrote a letter to her uncle.

(     ) 2. Lucy went to the Summer Palace with her mother.

( ) 3. We bought some cakes and some ice creams.

(     ) 4. Lucy dropped her cakes.

(     ) 5. We didn't take photos there.

下面各组词语中没有错别字的一项是（   ）

A．罗绮沧茫大地泛起漪沦激扬文字

B．蓊郁寂漠凄凉虚无缥渺安之若素

C．天籁蜿蜒曲折卧薪尝胆坚韧不拔

D．兑现踌躅满志峥嵘岁月慷慨激昂

急性梗阻性化脓性胆管炎的治疗原则是（）

A.先抗休克，后手术

B.抢救休克，忌手术

C.边抢救休克，边手术

D.应用大量抗生素

E.先控制炎症后手术

结构化设计主要分为系统设计和模块设计，______的任务是决定系统的模块结构。

专检