问题
选择题
After ________ the quality of this new machine, we are ready to go into production.[ ]
A. carrying out
B. making out
C. squeezing out
D. testing out
答案
答案：D
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After ________ the quality of this new machine, we are ready to go into production.[ ]
A. carrying out
B. making out
C. squeezing out
D. testing out
答案：D