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【判断题】
中心力场中,动量守恒而角动量不守恒。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】He had____ for supper and felt uncomfortable.
A.
too many
B.
much too
C.
too much
D.
many too
【多选题】发酵培养基中营养基质无机盐和微量元素的主要作用包括:
A.
构成菌体原生质的成分
B.
作为酶的组分或维持酶活性
C.
调节细胞渗透压
D.
缓冲pH值
E.
参与产物的生物合成
【简答题】Complete the sentences with the target words in the box. Change the form where necessary. Be careful, there are two extra words. 1. The little girl felt _____ for lying to her parents. 2. The contest ...
【简答题】When Paul worked in marketing, he shared an office with another colleague. They each felt the other chatted on the phone too much, which really ____________.
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