3,6,9,8,27,( ),( )
A.10,81
B.10,30
C.9,21
D.12,20
参考答案:A
Talent shows are getting _________ popular.
A.more and more
B.much and much
C.much and more
D.Most
循环冷却水系统设计中各冷却水设施应靠近______并避免修建过长的管沟和复杂的水工构筑物。
A.用水场地
B.用水设备
C.取水构筑物
D.冷却塔