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【单选题】
铁路局应()危险货物运输相关单位对企业运输员、押运员、经办人、装卸作业人员等从业人员依法进行安全教育和岗位技术培训,考核合格后上岗作业。A.
组织
B.
监督
C.
协助
D.
督促
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【单选题】He decided to make further improvements on the computer's design ______ the light of the requirements of customers.
A.
to
B.
for
C.
in
D.
with
【单选题】While every effort is made to ensure that the data provided through the Notices to Mariners service is accurate,the user needs to be aware of the risks to corruption of data. It is important that the ...
A.
DADD
B.
BACC
C.
DADC
D.
BADC
【单选题】--- I saw Nancy on the way home yesterday. --- It be her. She’s gone to America for further study.
A.
mustn’t
B.
can’t
C.
won’t
D.
needn’t
【简答题】He decided to make further improvements on the computer's design _____ the light of the requirements of customers. (A) on (B) for (C) in (D) with
【单选题】药物中的重金属杂质是指
A.
Sn2＋
B.
影响药物安全性和稳定性的金属离子
C.
原子量大的金属离子
D.
在规定条件下与硫代乙酰胺或硫化钠作用显色的金属杂质
E.
Hg2＋
【单选题】药物中的重金属杂质是指
A.
能与金属配合剂反应的金属
B.
能与硫代乙酰胺或硫化钠试液作用而显色的金属
C.
能使蛋白质变性的金属
D.
比重大于5的金属
E.
比重大于3的金属
【简答题】石灰爆裂的定义及危害?
【简答题】Listen and write the corresponding letter in the right place. a. Conduct interviews for further data. b. Choose the research methods. c. Determine the samples of the survey. d. Pre-test the question...
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