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【单选题】
化学毒物的一般急性毒性试验 , 如无特殊要求,则动物性别选择为 ( )。A.
雌雄多少都可以;
B.
雌雄各半;
C.
全部为雄性;
D.
全部为雌性。
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举一反三
【单选题】The earthquake may __ landslides that cause great damage and loss of life.
A.
trigger
B.
retreat
C.
emerge
D.
sc
【简答题】The earthquake may _________ landslides that cause great damage and loss of life.
【简答题】The direct cause of most earthquake-related deaths or injuries is seldom ground movement, but______, flying glass and falling objects.
【单选题】What was the cause of the stampede at a Hindu festival?
A.
An earthquake.
B.
An explosion of bomb.
C.
A fire.
D.
A flood.
【单选题】Lecture B Seismic Waves Which wave is the main cause of the shaking in during an earthquake?
A.
Love
B.
P
C.
Rayleigh
D.
S
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