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【单选题】
麻花钻头的顶角影响主切削刃上切削抗力的大小,顶角( )则轴向抗力愈小。A.
愈大
B.
愈小
C.
不变
D.
以上都不是
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举一反三
【简答题】this passage is a research report. A research report usually include the following five parts: research objectives, methods, findings, explanations and comclusion. In this passage, para.1 introduc...
【单选题】According to the text, 'a hoax' (Line 1, Para. 3) is probably ______.
A.
an experiment for the protection of crops
B.
a special way to plant crops
C.
an attempt made to fool people
D.
a research on the force of winds
【单选题】Passage One--- Question 46. What do we learn from a newly published study about cats?--- (Para. 1) The latest in cat research reveals that the lovely animal seems to have a basic grasp on both the law...
A.
They can be trained to understand the physical world.
B.
They know what kind of prey might be easier to hunt.
C.
They have a natural ability to locate animals they hunt.
D.
They are capable of telling which way their prey flees.
【单选题】According to the text, 'a hoax' ( line 1, para. 3 ) is probably ______.
A.
an attempt made to fool people
B.
a special way to plant crops
C.
an experiment for the protection of crops
D.
a research on the force of winds
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