皮皮学，免费搜题
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【单选题】
ZL102属于A.
低合金高强度结构钢
B.
合金渗碳钢
C.
碳素工具钢
D.
合金调
E.
铸造铝合金
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】关于钻孔的操作要点,下列叙述错误的是( )。
A.
钻孔前检查工件加工孔位置是否正确
B.
钻孔前检查钻头刃磨是否正确
C.
钻孔前检查钻床钻速是否合理
D.
钻孔时要给予很大的进给力
【单选题】The last paragraph suggests that ______.
A.
a modern computer won’t be down
B.
computers can take the place of humans
C.
sometimes a computer may bring suffering to people
D.
there will be great changes in computers
【单选题】In paragraph 1, 'Don't buck the trend. ' probably means '______'.
A.
Don't lead the trend
B.
Don't resist the trend
C.
Don't follow the trend
D.
Don't go against the trend
【简答题】In the sentence 'Maybe he doesn't see it himself' in the second paragraph, the pronoun“it”refers to_____
【单选题】A good paragraph shouldn't be…?
A.
Unified
B.
Coherent
C.
Ambiguous
D.
Well-developed
【简答题】翻译单词 maslahat bermoq_________________ ochilish marosimi_________________ butun dunyo _________________ tamosha qilmoq_________________ yomg'ir yog'moq_________________
【单选题】关于钻孔的操作要点,下列叙述错误的是 。
A.
钻孔前检查工件加工孔位置是否正确
B.
起钻时，先钻出一浅坑，观察位置是否正确
C.
钻孔将穿透时，增大进给力
D.
钻孔时要选择合适的切削液
【单选题】What can be inferred from Paragraph ?
A.
Wal-Mart shouldn't be responsible for the ruin of the vision.
B.
The city authority sets out to plan buildings.
C.
The surroundings of the ancient site are dirty.
D.
The historic interest is well preserved.
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