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【单选题】
下列绘制双代号网络图的步骤①计算网络图的节点参数，②安置节点位置，③绘制时间坐标轴，④按照原网络图逻辑关系绘制工作箭线，⑤标明关键线路，正确的顺序是A.
①→③→②→④→⑤
B.
③→②→①→④→⑤
C.
①→③→④→②→⑤
D.
④→①→③→②→⑤
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举一反三
【单选题】In a survey of Americans who had used an online dating service, approximately _____ said that they had had a positive experience.
A.
one-quarter
B.
one-third
C.
one-half
【简答题】在蜗杆传动中,蜗轮的螺旋线方向应与蜗杆的螺旋线方向 ( ) 。
【单选题】I see from your resume that you've had a lot of experience in sales. ( )
A.
Yeah. I am sure this furniture will sell very well in this neighborhood.
B.
Well. I worked as a teacher. a nurse , a doctor and a lawyer In the last five years.
C.
Yes , my parents have a store. I used to work there after school.
【单选题】It seemed absurd to Helen that she had more cooking experience than the teacher of her class.
A.
responsible
B.
challenging
C.
ridiculous
D.
wild
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