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【单选题】
麻花钻有2条主切削刃、2条副切削刃和（）。A.
2条
B.
1条
C.
3条
D.
没有
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【单选题】“Was the driving pleasant when you vacationed to Mexico last summer?" “No, it ___ for four days when we arrived, so the roads were very muddy." [ 时态考点 ] A. was raining B. had been raining C. would be...
A.
1
B.
2
C.
3
D.
4
【简答题】听对话和对话后的问题，选择正确答案。对话和问题听两遍。 ( )1.A. It kept raining. ( )2.A. They're new. ( )3.A. For six years. ( )4.A. Much better. ( )5.A. Pigs are hard to look after. B. They went to the mount...
【简答题】按观测量的不同,GPS定位的观测方法可分为 观测和 相位观测
【简答题】用所给单词的适当形式填空 1. Jim is often seen to be made __ (stay)behind after schoo1. 2. It was raining hard when he_____ (arrive)home. 3. Because I ____ (lose)my bicycle,I have to walk to school. 4. The singer,...
【简答题】脂肪酸的β-氧化作用通常是在线粒体的基质中进行的，而在细胞质中形成的脂酰CoA不能透过线粒体内膜，需依靠内膜上的载体______携带，以______的形式跨越内膜而进入线体内膜内侧。
【简答题】按观测量的不同，GPS定位的观测方法可分为码相位观测和（）相位观测。
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