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【多选题】
在1405年至1433年这28年间,率领船队七下西洋,最远到达()。A.
红海沿岸
B.
渤海沿岸
C.
非洲
D.
非洲
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举一反三
【判断题】A PDM system can help moldemakers improve the efficiency of data management.
A.
正确
B.
错误
【判断题】Application of a PDM system in mold design can help the users to ensure the quality of their products.
A.
正确
B.
错误
【单选题】The musician along with his band members ________ ten performances in the last three months.
A.
gives
B.
has given
C.
have given
D.
give
【简答题】Read the passage.Match each function of a PDM system in the left colum the the things it can achieve in the right colum.
【判断题】Applicaiton of a PDM system in mold design can help the users to ensure the quality of their products.
A.
正确
B.
错误
【单选题】The musician along with his band members _____ ten performaces in the last three months.
A.
gives
B.
has given
C.
have given
D.
give
【简答题】实验发现电子吸收光谱并非线状光谱,吸收峰宽度约为1000—3000cm-1 原因:
【判断题】A PDM system can help mold designers find existing mold designs that are similar to the project at hand.
A.
正确
B.
错误
【判断题】A PDM system can help moldmakers improve the efficiency of data management.
A.
正确
B.
错误
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