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【简答题】
Overseas visitors Excluding A. Ambassadors B. Foreign experts, students, journalists. C. Travelers in transit D. Residents in bordering areas E. Overseas Chinese visitors who came inbound to China mainland from Hong kong.
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举一反三
【判断题】动态生物化学是研究这些分子的化学组成、结构、理化性质、生物功能及结构与功能的关系
A.
正确
B.
错误
【单选题】Li Na started her sporting life ( )a badminton racket in her hand at age 6.
A.
to
B.
on
C.
with
D.
about
【单选题】Li Na started her sporting life ( ) a badminton racket in her hand at age six.
A.
in
B.
with
C.
on
D.
at
【单选题】挑出句中的表语 The cake tases delicious . A B C
A.
B.
C.
C
【简答题】铸铁是碳的质量分数____并含有硅、锰、硫、磷等元素的多元铁基合金。铸铁与钢相比,虽然____、____、____较低,但却具有优良的____性、____性、____性,,____也较低,因此在工业上得到了广泛的应用。
【单选题】挑出句中的表语 T he leaves have turned yellow . A B C
A.
B.
C.
C
【多选题】铸铁是含碳量较大,并含有较多硅、锰、硫、磷等杂质元素的铁碳合金。在不同的冶炼条件下,铸铁中石墨的形状可以呈()
A.
片状
B.
立方体
C.
球状
D.
链状
【单选题】____是含碳量大于2.11%,并含有较多硅、锰、硫、磷等元素的多元铁基合金。
A.
铸铁
B.
耐热钢
C.
不锈钢
D.
低碳钢
【单选题】挑出句中的表语:Soon they all became interested in the subject.
A.
became
B.
interested
C.
subject
D.
they
【单选题】挑出句中的表语 They were good fridends A B C in the middle school . D
A.
B.
C.
D.
D
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