塔式起重机基础(固定)措施费按“()”计算。
A、月
B、天
C、座
D、台次
参考答案:C
Only after they had discussed the matter for several hours________a decision. [ ]
A. they reached
B. did they reach
C. they reach
D. do they reach
影响细粒原料成球的力有两种()和()。