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【简答题】
解下列方程: (1)49x 2 =16 (2)x 3 -27=0.
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参考答案:
举一反三
【简答题】带电离子的产生主要有、_、___、等方式。
【单选题】Page 103 Task 2 Choose the sentence that best expresses the meaning of the sentence from the text. I feel as if I’m always dragging my wayward brain back to the text.
A.
I feel as if I am so immersed in the text that nothing can tear me away.
B.
I feel as if the text is virtually incomprehensible to me.
C.
I feel as if I have lost my ability to do critical thinking about the text.
D.
I feel as if I am constantly struggling to concentrate on the text.
【简答题】普通钢和优质钢是按其强度等级来区分的。
【单选题】It doesn’t astonish us that the administration now appears so heel-dragging over this issue. The underlined word “heel-dragging” probably means ( ).
A.
indecisive
B.
unscrupulous
C.
meticulous
D.
susceptible
【简答题】带电离子的产生主要有碰撞游离、 、 、表面游离等方式。
【单选题】在实际施工中,因各种因素的影响,使井内压力平衡遭到破坏而导致出现溢流,甚至可能发生井喷。这时就需要井控设备实施压井作业,重新恢复对油气井的压力控制。这是第()级井控
A.
1
B.
2
C.
3
D.
4
【单选题】A drift lead indicates that the vessel is dragging anchor when the line is().
A.
taut and leading forward
B.
slack
C.
leading out perpendicular to the centerline
D.
leading under the hull
【单选题】在实际施工中,因各种因素的影响,使井内压力平衡遭到破坏而导致出现溢流,甚至可能发生井喷。这时就需要井控设备实施压井作业,重新恢复对油气井的压力控制。这是第()级井控
A.
B.
C.
D.
【单选题】___ allows you to click at the beginning and end of text that you want to highlight instead of holding the mouse button down while dragging over the text.
A.
SelectLock
B.
HighlightLock
C.
TextLock
D.
ClickLock
【简答题】带电离子的产生主要有碰撞电离、热电离、______、表面电离等4种方式。
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