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【多选题】
在下列关于动量的表述中,正确的是A.
质点始、末位置的动量相等，表明其动量一定守恒
B.
内力对系统内各质点的动量没有影响
C.
系统的内力无论为多大，只要合外力为零，系统的动量必守恒
D.
内力不影响系统的总动量，但要影响其总能量
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【简答题】A. Tips on playing tricks on April Fool’s Day B. How France celebrate April Fool’s Day C. An example of April Fool’s Day tricks D. At what time Brits and the Danish celebrate April Fool’s Day E. How B...
【简答题】精确制导武器被誉为“( )”。
【单选题】Our cotton T-shirts are packed ___ boxes ___ one dozen each, 200 boxes ____ a carton.
A.
with, in, to
B.
with, to, in
C.
in, of, to
D.
in, to, in
【简答题】Much of our clothing today is ____ (made of/made from) cotton (blue jeans, T-shirts, etc.).
【单选题】Much of our clothing today is made ______ cotton (blue jeans, T-shirts, etc.).
A.
of
B.
up of
C.
from
D.
up from
【单选题】Which of the following does NoT belong to direct-action advertising?
A.
“ This is Nestle Coffee Music Hour.”
B.
Our product is more durable than Whirlpools
C.
“ Ours is sugar-free!
D.
Cotton is a better material than nylon for T-shirts
【单选题】Which of the following does NOT' belong to direct-action advertising?
A.
“This is Nestle Coffee Music Hour."
B.
"Our product is more durable than Whirlpool's.
C.
“Ours is sugar-free!”
D.
“Cotton is a better material than nylon for T-shirts."
【单选题】Which of the following does NOT belong to direct-action advertising?
A.
“This is Nestle Coffee Music Hour.”
B.
“Our product is more durable than Whirlpool’s.”
C.
“Ours is sugar-free!”
D.
“Cotton is a better material than nylon for T shirts.”
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