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【单选题】
“Reigned China for 276 years” in the sentence “The Ming Dynasty, reigned China for 276 years, was depicted as one of the greatest periods of human history” functions as _________.A.
predicative
B.
complement
C.
attributive
D.
adverbial
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【简答题】若直线l的方向向量为（4，2，m），平面α的法向量为（2，1，-1），且l⊥α，则m=______．
【单选题】What is the difference between velocity and speed?
A.
There is no difference.
B.
Velocity is a vector, and speed is a scalar.
C.
Speed is a vector, and velocity is a scalar.
D.
Speed states only a magnitude, and velocity states a magnitude and direction.
E.
Velocity states only a magnitude, and speed states a magnitude and direction.
【简答题】在生产上把利用热能将物料中的水分汽化,再经流动着的惰性气体带走以除去固体物料中的水分的过程称为()。
【单选题】What is the difference between velocity and speed?
A.
There is no difference, they are both vectors.
B.
Speed is a scalar and velocity is a vector.
C.
Speed is a vector and velocity is a scalar.
D.
There is no difference, they are both scalars.
【简答题】已知l∥α,且l的方向向量为u=(2,m,1),平面α的法向量为v=(1, ,2),则m=____.
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