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【单选题】
为保证数控自定心中心架夹紧零件的中心与机床主轴中心重合 须使用( )调整。A.
杠杆表和百分表
B.
试棒和百分表
C.
千分尺和试棒
D.
千分尺和杠杆表
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知识点：
皮皮学刷刷变学霸
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【多选题】对于人类进化来讲,科学家们可以通过追索( )来找到线索。
A.
母系遗传的线粒体DNA
B.
父系遗传的Y染色体DNA
C.
母系遗传的Y染色体DNA
D.
父系遗传的线粒体DNA
【简答题】请简述翻模步骤 。
【简答题】阅读理解 It is often considered that the schoolyard is where bullies(欺负)go to make other kids a miserable school life, but a new study suggests that classrooms are another popular place. The study, presen...
【简答题】Although Paris is often considered the city of romance， close to a million s who call it home are single. Many single people say that France’s capital is one of the most difficult places to meet ...
【简答题】Although Paris is often considered the city of romance, close to a million s who call it home are single. Many single people say that France’s capital is one of the most difficult places to meet ...
【单选题】I’m considering _____a teacher after graduation because a teacher is often considered _____ the engineer of the human soul.
A.
to become ; to be
B.
becoming ; to be
C.
to become ; being
D.
becoming;being
【简答题】______ , it is often considered impolite to interject a remark when people are talking. (无论在什么文化背景下).
【单选题】Pigeon is often considered a（n）________ of peace.
A.
example
B.
sign
C.
mark
D.
symbol
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