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【单选题】
对于楔键联接说法错误的是（）。A.
楔键的斜度稍大于轮毂键槽底面的斜度，以便楔紧
B.
楔键的上顶面与轮毂的键槽相接触
C.
楔键联接键的两侧与键槽有一定间隙
D.
对于钩头楔键，不应使钩头紧贴套件端面，以便拆卸
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举一反三
【单选题】Why does Alice look depressed?
A.
Because she has run out of her money.
B.
Because she is spending too much money and has difficulty in how to budget well.
C.
Because she is the only person who has budget problem.
D.
Because she is living alone.
【单选题】Why does Alice visit Laurent White?
A.
To give him some samples and catalogs.
B.
To express the desire to establish business relations.
C.
To follow up their quote.
【简答题】Why was Alice offended?
【单选题】Why does Alice come to Bill's office?
A.
To ask some questions.
B.
To collect the payment.
C.
To get the documents.
【单选题】Why does Alice not want to work at home?
A.
Because her home is so crowded.
B.
Because she doesn't get dedicated phone lines at home.
C.
Because there are many distractions at home.
D.
Because she always thinks about work at home.
【简答题】摄像时如何保持单一主体的活力?
【单选题】----Why does Alice like__________? ----Because she likes to wear clean clothes every day.
A.
making the bed
B.
doing the dishes
C.
doing the laundry
D.
sweeping the floor
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