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【判断题】
好氧发酵中，溶氧速率是否能满足生物细胞的代谢与生长是生物发酵生产的限制性因素。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】When the tank can carrying poisonous gas ran off the rails the firemen tried to______ the village from all traffic.
A.
dismiss
B.
insulate
C.
isolate
D.
expel
【简答题】B I find it annoying and funny when I think about how we use protective or decorative wrappings ' (装饰性包装)in this country. When I come home from the supermarket and start to unpack, I am always shocked...
【单选题】The firemen tried their best to _______ the fire but in vain.
A.
put up
B.
put forward
C.
put down
D.
put out
【简答题】有色金属可以分为几类？
【单选题】The 19th-century scholars tried to ______ the origins of modern languages to ancient Hebrew.
A.
tracing
B.
tracking
C.
strolling
D.
stumbling
【单选题】The shop girl almost called me stupid when I said that camera wasn't to my ______ and a bit cheap-looking.
A.
astonishment
B.
taste
C.
delight
D.
knowledge
【简答题】Firemen tried to ________________ (扑灭) the fire and save the injured.
【单选题】When bird watchers find a nest, they are very careful not to disturb it lest the mother bird______ frightened and desert it
A.
should be
B.
will be
C.
may be
D.
could be
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