皮皮学，免费搜题
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【单选题】
.You’ll never guess who I met today—my old teacher! We_____for twenty years.A.
don’t meet
B.
haven’t met
C.
hadn’t met
D.
couldn’t meet
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皮皮学刷刷变学霸
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【简答题】环锭细纱机上纱线所受到的张力可分为三段：前罗拉钳口至导纱钩区间纱线受到的张力称为（），导纱钩至钢丝圈间纱线受到的张力称为气圈张力，钢丝圈至管纱卷绕点间纱线受到的张力称为（）。
【单选题】They could not agree____ each other although they talked for a long time, but they finally agreed ____ a date for another meeting
A.
with, on
B.
on, with
C.
to, on
D.
with, to
【单选题】They could not agree ___ each other although they talked for a long time, but they finally agreed ____ a dated for another meeting.
A.
with; to
B.
on; with
C.
to; on
D.
with; on
【简答题】They could not agree ____each other although they talked for a long time, but they finally agreed ____ a date for another meeting.A. with; on B. on; with C.to; on D. with; to
【多选题】半跪式蹲姿的动作要点是（）
A.
下蹲时右腿在前，弯曲下蹲；
B.
单膝点地；
C.
左腿在后左膝点地，双腿紧贴，臀部向下，身体重心落在左腿上；
D.
左膝高于右膝，臀部向下，上身稍向前倾
【简答题】通过一定数量的货币表现出来的商品价值叫作 。
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