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【单选题】The Lakers' forward Kobe Bryant has scored 50 or more points in four straight games, second in the NBA only to Wilt Chamberlain's seven. He also now is tied with Michael Jordan for second with four be...
A.
Kobe Bryant is the second in the NBA for what he got 50 or more points in four games.
B.
Wilt Chamberlain used to get 60 or more points in seven straight games, first in the NBA.
C.
Michael Jordan is in the third place with four behind Chamberlain's 32 in most 60-point games.
D.
Michael Jordan is equal to Kobe Bryant in most 60-point games.
【单选题】A( n)______shape has four straight sides at 90°to each other, two of which are much longer than the other two.
A.
square
B.
oval
C.
oblong
D.
circular
【单选题】A(n) __________ shape has four straight sides at go to each other, two of which are much longer than the other two.
A.
square
B.
oval
C.
circular
D.
oblong
【单选题】Do you remember the popular singer __________ long straight hair?
A.
has
B.
is
C.
looks like
D.
with
【简答题】若图3(b)中I=-2A,R=3Ω,则U=?
【单选题】Four long straight wires carry equal currents into the page as shown. The magnetic force exerted on wire F is:
A.
north
B.
south
C.
east
D.
west
【单选题】How long was the journey home for the Polos?
A.
four years
B.
three years
C.
twenty-four years
D.
five years
【单选题】Her hair is _________ . [     ]
A.
four feet's long
B.
four-foot-long
C.
four-feet long
D.
four feet long
【简答题】下图中,Vcc=12V, R b ’ =100kΩ,放大倍数 b=100 ,并记 R b = R b ’ + R w ,问: (1)当输入电压 u i =0时,测得 U BEQ =0.7V, U CEQ =6V,若要基极电流 I BQ =20μA,则: 1 R b 的值约为 R b ≈ kΩ(值取整数) ; 2 R c 的值约为 R c ≈ kΩ (值取整数) . (2)若测得输入电压有效值 u ...
【单选题】如图所示电路中,若U=6V,R=3Ω,则I=__A
A.
2
B.
-2
C.
6
D.
-6
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