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【單選題】
在公式v=v0+at中，涉及到四個(gè)物理量，除時(shí)間t是標(biāo)量外，其余三個(gè)量v、v0、a是矢量。在直線(xiàn)運(yùn)動(dòng)中這三個(gè)矢量都在同一條直線(xiàn)上，當(dāng)取其中一個(gè)量的方向?yàn)檎较驎r(shí)，其它兩個(gè)量的正、負(fù)值就有了方向意義。若取初速度v0方向?yàn)檎瑒t下列說(shuō)法中正確的是
A.
勻加速直線(xiàn)運(yùn)動(dòng)中，v>0，a<0
B.
勻加速直線(xiàn)運(yùn)動(dòng)中，v<0，a>0
C.
勻減速直線(xiàn)運(yùn)動(dòng)中，v<0，a>0
D.
勻減速直線(xiàn)運(yùn)動(dòng)中，v>0，a<0
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舉報(bào)參考答案：
舉一反三
【單選題】When Tom was on his way home from school last night, he got____by two robbers..
A.
robbed
B.
stolen
C.
robbing
D.
stealing
【單選題】To host the Olympics is __________ to win Olympic medals.
A.
as competition much as
B.
much a competition as
C.
as a competition much as
D.
as much a competition as
【單選題】______ quickly, or you’ll be late.
A.
Get dressed
B.
Getting dressed
C.
To get dressed
D.
Dress your clothes
【單選題】He commanded that all the gates __________.
A.
should shut
B.
would be shut
C.
shut
D.
be shut
【單選題】Dream of the Red Chamber is _____ worth _____ because we can learn a lot about the noble families in the feudal society.
A.
very; reading
B.
well; to be read
C.
well; reading
D.
very; to be read
相關(guān)題目：
【單選題】When Tom was on his way home from school last night, he got____by two robbers..
A.
robbed
B.
stolen
C.
robbing
D.
stealing
【單選題】To host the Olympics is __________ to win Olympic medals.
A.
as competition much as
B.
much a competition as
C.
as a competition much as
D.
as much a competition as
【單選題】______ quickly, or you’ll be late.
A.
Get dressed
B.
Getting dressed
C.
To get dressed
D.
Dress your clothes
【單選題】He commanded that all the gates __________.
A.
should shut
B.
would be shut
C.
shut
D.
be shut
【單選題】Dream of the Red Chamber is _____ worth _____ because we can learn a lot about the noble families in the feudal society.
A.
very; reading
B.
well; to be read
C.
well; reading
D.
very; to be read
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