—It is so noisy here that I can’t hear _____ just now. Could you please say it again?

—No problem.

A．what you say

B．what do you say

C．what you said

D．what did you say

在整机解体清洁度检查时解体过程中得到的破损纸垫和被弹簧垫圈刮下的金属屑等属于清洁度考核范围。