题目内容

Pb2+属于（）电子构型

A. 8
B. 18
C. 18+2
D. 9~17

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The last great musician and (1)____of what has been called the "Big Band Era".His music sold(2)_. He was bon in New York City in (3)_. His parents were (4)from Eastern Europe. At the age of (5), he began to play the (6)_and then the clarinet. He began working as a professional musician when he was(7). He left home and began piaying in bands across the United States. In (8), young Artie Shaw travaled to Chicago,Illinois to hear the great trumpet player,Louis Armstrong. He became interested in (9).In nineteen thirty-six, he was given a chance to form (10)_____and play at New York's famous theater on Broadway.

He returned to work after recovery from his illness, _______ another employee had taken his place.

A. only to tell
B. only to be told
C. only to be telling
D. to be told

摩法的操作要领是什么？

网店运营中的三要素之一：流量，是指（）

A. PV
B. UV
C. MV
D. ROI