美沙酮化学结构中含有以下哪些基团A．苯基 B．酮基 C．二甲氨基 D．芳香氨基 E．

阳光如学举行少先队队仪式比赛，全校共有760名少先队员，平均分成图5个0队，每个0队又分成6分如队，平均每个如队有多少名少先队员？

创伤性股骨闭合性骨折后体温()

A．完全保持正常

B．一般低于正常

C．不规则发热

D．通常不超过38℃

E．可在39℃以上

市话网上数据传输期间，在源节点与目的节点之间有一条利用中间节点构成的物理连接线路。这种市话网采用以下哪种交换技术

A．报文交换

B．电路交换

C．分组交换

D．数据交换

真是一个钱撕成八瓣用，心里总想着怎样能够改善家里的困境。( )

A. It's really that each copper being cut into eight pieces, and I always think about how to improve the conditions in my family.
B. It's really that each copper being cut into eight pieces, and I kept racking my brains for ways to improve our difficult conditions.
C. Each single copper had to be eked out, and I kept racking my brains for ways to improve our difficult conditions.
D. Each single copper had to be eked out, and I always think about how to improve the conditions in my family.

水炮系统从启动至炮口喷射水的时间不应大于5min。