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[多选题]
_____________ the bad weather, they did experiments on ways of storing solar energy.
A.Though
B.Although
C.Despite
D.In spite of
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查看答案
A.Though
B.Although
C.Despite
D.In spite of
第2题
Medline光盘数据库的内容涵盖三种重要的纸本医学文献检索工具,它们()。
A. BA、IM、EM
B. BA、EM、International Nursing Index
C. BA、Index to Dental Literature、International Nursing Index
D. IM、Index to Dental Literature、International Nursing Index
第3题
A.BA系统故障时阀门触发了开信号由1变0,关的信号不变为1,阀门立即关闭
B.BA系统故障时阀门触发了开信号由1变0,阀门立即关闭
C.BA系统故障时阀门触发了开信号由1变0,关的信号不变为1,阀门不动作
D.BA系统故障时阀门不再接收BA系统发来的信号
第5题
A.NaOH>Ca(OH)2>Ba(OH)2>Be(OH)2
B.NaOH>Be(OH)2>Ba(OH)2>Ca(OH)2
C.NaOH>Ba(OH)2>Be(OH)2>Ca(OH)2
D.NaOH>Ba(OH)2>Ca(OH)2>Be(OH)2