Khi cho ánh sáng trắng truyền từ không khí vào nước th
A.Lục.  
B.Đỏ.
C.Lam.
D.Tím.

Một con lắc lò xo dao động điều hòa với phương trình x
A.\(118.44cm/{s^2}\)
B.\(59,22cm/{s^2}\)  
C.\( - 118,44cm/{s^2}\)  
D.\(0cm/{s^2}\)

Điện năng truyền tải đi xa thường bị hao phí chủ yếu d
A.\({P_{hp}} = R.\frac{{{{\left( {Uco{\rm{s}}\varphi } \right)}^2}}}{{{P^2}}}\)
B.\({P_{hp}} = R.\frac{{{U^2}}}{{{{\left( {P.co{\rm{s}}\varphi } \right)}^2}}}\)  
C.\({P_{hp}} = {R^2}\frac{P}{{{{\left( {Uco{\rm{s}}\varphi } \right)}^2}}}\)  
D.\({P_{hp}} = R.\frac{{{P^2}}}{{{{\left( {Uco{\rm{s}}\varphi } \right)}^2}}}\)

Tính nhẩma 5012 b 58102 c 9996 + 45 d 121256
A.
B.
C.
D.

treat develop prevent detect Giải chi tiếtKiến thức Từ
A.treat
B.develop
C.prevent
D.detect

the other others another other Giải chi tiếtKiến thức
A.the other
B.others
C.another
D.other

partly slowly primarily especially Giải chi tiết
A.partly
B.slowly
C.primarily
D.especially

Therefore Furthermore Otherwise However Giải chi tiếtK
A.Therefore
B.Furthermore
C.Otherwise
D.However

The car was very expensive He couldnt buy it The car wa
A.The car was not cheap enough for him to buy it.
B.The car was so expensive that he couldn't buy it.
C.It was such expensive car that he couldn't buy it.
D.The car was too expensive for him to buy it.

The car was very expensive He couldnt buy it The car wa
A.The car was not cheap enough for him to buy it.
B.The car was so expensive that he couldn't buy it.
C.It was such expensive car that he couldn't buy it.
D.The car was too expensive for him to buy it.