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【单选题】
在典型方程中，恒大于零的是A.
主系数
B.
右端项
C.
副 系数
D.
自由项
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举一反三
【单选题】I agree to the idea our staff should use recycled paper to save money .
A.
what
B.
as
C.
which
D.
that
【判断题】The military weapon actually used during the Mongol conquest in the 13th century was the rocket.
A.
正确
B.
错误
【简答题】The military weapon actually used during the Mongol conquest in the 13th century was_______________.
【单选题】选出正确答案2. I agree to the idea ________ our staff should use recycled paper to save money.选出正确答案2. I agree to the idea ________ our staff should use recycled paper to save money.
A.
what
B.
as
C.
which
D.
that
【判断题】The military weapon actually used during the Mongol conquest in the 13 th century was the rocket .
A.
正确
B.
错误
【单选题】I agree to the idea our staff should use recycled (再生的) paper to save money.
A.
what
B.
which
C.
as
D.
that
【单选题】I agree to the idea _______ our staff should use recycled papaer to save money.
A.
what
B.
which
C.
that
D.
as
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