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【单选题】
左前臂截肢者最可能需要的辅助器具是（） A．改装的筷子 B．书写辅助器具 C．改装的梳子 D．剪指甲辅助器具 E．改装柄钥匙A.
a
B.
b
C.
c
D.
d
E.
e
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【单选题】What does the author imply by saying '…is far less abstract in Hawaii than in other places' (Line 2, Para. 4)?
A.
Hawaii is much safer than other places.
B.
Hawaii is not frightened by extinction.
C.
Hawaii has tried its best to reserve the land.
D.
Hawaii has gone through much extinction.
【单选题】Mauna Kea in Hawaii: Astronomy on the World's Highest Island Mountain Four thousand years ago, a volcano exploded in a far away area of the Pacific Ocean. Today, the Mauna Kea volcano is inactive. It ...
A.
Y
B.
N
C.
NG
【简答题】What did people do to protect themselves against the tsunami in Hawaii?
【简答题】在题图 2.2 所示电路中,已知 U S =6V , I S =2A , R 1 =3 Ω, R 2 =6 Ω, R 3 =5 Ω, R 4 =7 Ω。试用电压源与电流源等效变换法计算电阻 R 4 中的电流 I 4。
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