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【单选题】
以下属于非接触式密封的是( )。A.
毛毡圈密封
B.
皮碗密封
C.
油沟式密封
D.
毛毡加迷宫式圈密封
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反馈参考答案：
举一反三
【简答题】最难清洁的部位有哪些?
【单选题】—Don't forget to come to my birthday party, Susan. —______.
A.
No, I don't
B.
Yes, I can't
C.
No, I won't
D.
Yes, I'm sure
【单选题】听力原文：Attention Pearson shoppers: don't forget to register for our 5 o'clock drawing for your chance to win a one-year premium membership to Mike's Fitness Center. You can register in the back of the s...
A.
At a shoe store
B.
At a fitness center
C.
At a health food store
D.
At a sporting goods store
【简答题】Don't forget to drink enough water even_______.
【简答题】制作乌龙茶的鲜叶原料大都是采摘( )。
【简答题】妊娠糖尿病 的英语拼写是?
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