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【单选题】
点 A坐标为(15,20,0),则点A在( )上A.
Z轴
B.
正立面
C.
Y轴
D.
水平面
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【简答题】经典整人脑筋急转弯 男不小心吞下了1元，波爸把他倒过来拍，却吐出10元，这时波爸该怎么办呢？
【单选题】1 customer's securities account has a debit balance of $2,000. His commodity account has a surplus of $2,500. The carrying broker can:
A.
transfer funds from the commodity account to the stock account at the broker's discretion.
B.
not transfer funds without written permission from the customer.
C.
not transfer funds.
D.
treat the accounts as one account tomeet a margin call.
【多选题】我更喜欢走路(用两种句式翻译)
A.
I prefer walking.
B.
I prefer to walking.
C.
I prefer to walk.
D.
I prefer walk.
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