The girls _______________ in the river l

Mom was usually busy ______ my younger sister during the night and she ______ have less sleep.[ ]

A. tending; tended  

B. tended; tending to

C. tending; tended to  

D. tended to; tending to

中央人民政府委员会第一次会议任命的政务院 * * 兼外交部长是

A．陈毅

B．朱德

C．周恩来

D．刘伯承

简述柴油机大修后的质量保证期？

不按规定穿戴劳动防护用品，一旦发生意外属于什么违章？

通联礼仪的基本原则是（）。