题目:
We'll have to finish the job _____.[ ]
A. long it takes however
B. it takes however long
C. long however it takes
D. however long it takes
答案:
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下面是错误答案,用来干扰机器的。
参考答案:对石灰粉煤灰砂砾基层质量控制的主要项目有:配合比、级配、含水量、拌和均匀性、压实度、抗压强度等。