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【多选题】
下列属于水体化学性污染的有( )。A.
热污染
B.
酸碱污染
C.
悬浮物污染
D.
有机有毒污染
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举一反三
【单选题】下列关于胸膜腔的叙述，错误的是
A.
胸膜腔是密闭的
B.
胸膜腔内压经常低于大气压
C.
胸膜腔内负压有利于静脉血回流
D.
平静呼吸时，吸气末胸膜腔内压绝对值小于呼气末
E.
胸膜腔内负压的存在有利于肺的扩张
【单选题】Why did the people in the research feel lonely?
A.
They were self-conscious．
B.
They were not adaptable．
C.
They were homesick．
D.
They were too proud．
【单选题】In the following sentence, fromwhich following aspects does thesentence extendthe definition? “The snow leopard (Panthera uncia) is a feline, which lives in centralAsia. It used to be thought not to b...
A.
genres
B.
history
C.
features
D.
explanation
【简答题】不随意注意是一种没有______的、也不需要______的注意。
【简答题】The reason why people announce that 'things are not what they were in my young days' is that their _____________is not the same as before.
【单选题】下列关于胸膜腔内压的叙述，错误的是______。
A.
一般情况下为负值
B.
以大气压为0时，胸膜腔内压=-肺回缩压
C.
吸气时负值减小
D.
胸膜腔内负压有利于静脉回流
E.
胸膜腔内负压使肺维持一定的扩张状态
【单选题】The tellers in Mrs. Vaughts bank were told to ________.
A.
explain why they could not pay out all accounts
B.
pay out accounts as requested
C.
make the depositors believe that the bank was stand
D.
pay out money as slowly as possible
【简答题】The reason why people announce that "things are not what they were in my yoThe reason why people announce that ///"things are not what they were in my young days///" is that their _____________is not ...
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