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【单选题】
El Abbasa (Sweet Water) Canal______from River Nile at Cairo to Suez Canal at Ismaili.A.
extend
B.
extending
C.
are extending
D.
extends
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E
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A.
正确
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错误
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【单选题】Suppose the position of an object at time t is . What is the acceleration of the object at time t = 0?
A.
m/s
B.
m/s
C.
m/s
D.
m/s
【单选题】A vessel is not in every way fitted for cargo service ______ at the time of her delivery to the charterers her engine room staff is incompetent and inadequate，and accordingly she is unseaworthy．
A.
whether
B.
should
C.
shall
D.
if
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