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【简答题】
简述润滑油中清净分散剂的作用机理。
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【单选题】听力原文：M: Happy birthday, Kate! This is for you. W: Thank you so much, Jack. To be frank, I'd rather forget my birthday since last year I had my fortieth birthday. Q: What does the woman really mean? (1...
A.
She doesn't want to have a birthday party.
B.
She doesn't like the gift.
C.
She wants to forget her birthday.
D.
She doesn't want to grow old.
【简答题】WCDMA系统的测量事件触发条件有 和 。
【简答题】确认测试计划是在()阶段制定的。