关于泄泻的治疗选穴，以下哪项叙述是错误的：A．中脘是胃的募穴，不可用于治疗泄泻 B．

____ the telephone number several times, but he couldn't learn it by heart. [ ]

A. Having told                    

B. Having been told

C. Although he had been told        

D. He had been told

以下不属于有价证券的是（）。

A.国库券

B.人寿保单

C.本票

D.股票

新疆因特有的光热条件，_________、_________和多种瓜果成为绿洲的特色农产品。

肺动脉闭锁合并室间隔缺损时（）。

A.全心扩大，左室为著

B.全心扩大，右房为著

C.左室壁增厚

D.肺动脉位于主动脉前方

E.不伴有动脉导管未闭

传感器作用是什么？