【单选题】
· You will hear a conversation about quality control.
· For each question 23-30, mark one letterA,B、orC、for the correct answer.
·After you have listened once, replay the recording.
A、QC、process |
B.
B、hygiene |
C.
C、QC、process and hygiene |
网考网参考答案:C
网考网解析:
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