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【简答题】
公共危机管理的原则包括时间、效率、协调、科学等方面原则，其中占第一位的科学性原则（ ）
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举一反三
【单选题】“ 人总是要死的” 谓词公式表示为 。（论域为全总个体域） M(x) ： x是人；Mortal(x) ：x 是要死的。
A.
M(x) →Mortal(x)
B.
M(x)∧Mortal(x)
C.
(∀ x) (M (x)→Mortal(x))
D.
(∃ x) (M (x)∧Mortal(x))
【单选题】( )4.How long has the bike been part of Thomas’ life?
A.
Since January
B.
Since last year.
C.
For a month.
D.
For a year.
【单选题】Q4. How long has the company been in operation?
A.
50 years.
B.
15 years.
C.
5 years.
D.
25 years.
【单选题】Conversation 2 6
A.
Going to the high street.
B.
Visiting everyday shops.
C.
Visiting shops and buying online.
D.
Buying things like electrical goods.
【单选题】How long does the Grand Slam tournaments, Wimbledon , last?
A.
One week.
B.
Two weeks.
C.
One month.
D.
Ten days.
【单选题】How long had Valentine been executed when Lupercalia was renamed?
A.
270 years.
B.
496 years.
C.
226 years.
D.
220 years.
【单选题】Conversation 2 6
A.
Getting some celebrity endorsements.
B.
Inventing some fashionable products.
C.
Putting up some fascinating ads.
D.
Setting up activities for youngsters.
【单选题】We know from the passage that ______. ( )
A.
exposure to even tiny amounts of radiation is fatal
B.
the effect of exposure to radiation is slow in coming
C.
radiation is avoidable in space exploration
D.
astronauts in spacesuits needn't worry about radiation damage
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