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【判断题】
俄罗斯国旗分别为白、蓝、红三色A.
正确
B.
错误
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【简答题】（1）_______和_______是衡量共价键稳定性的参数。 （2）键长是形成共价键的两个原子之间的_______间距。键长越长，键能_______（填“大”或“小”），键越_______断裂，化学性质越_______（填“稳定”或“不稳定”）。 （3）键角是描述______________的重要参数，分子的许多性质都与键角有关。CO 2 是_______形分子，键角_______。H 2 O是...
【单选题】Which of these presidents does Forrest meet?
A.
George Bush
B.
Bill Clinton
C.
Ronald Reagan
D.
Richard Nixon
【单选题】Which of these does NOT describe Rani ki Vav? (Text 6A)
A.
a magnificent temple
B.
a well with steps
C.
a memorial to a dead king
D.
an 11th-century structure
【单选题】Which of these does not help a speech reach an audience?
A.
long complex sentences
B.
simple vocabulary
C.
concrete images
D.
repeating certain phrases
【单选题】Which of these does not fit in the same age group as the others?
A.
dieting should be discouraged
B.
more calories are needed
C.
immune system becomes mature
D.
encourage sexual health and abstinence
E.
substance abuse is a concern
【单选题】To which of these does IP multicast send packets?（）
A.
a single host
B.
a subset of hosts
C.
all hosts sequentially
D.
all hosts simultaneously
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