在地板辐射采暖系统中,分(集)水器连接的加热管管段不宜超过( )组。
A.6
B.7
C.8
D.9
参考答案:C
____ were given to those foreigners who helped the country ___ independence from Britain.
A.Rewards; get
B.Awards; be
C.Prizes; take
D.Awards; gain
在战术训练中,要突出重点,注重实效。