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【单选题】
( B )一般适用于低速,轴的刚度较大、无剧烈冲击的场合。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>A.
凸缘联轴器
B.
滑块联轴器 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
C.
万向节联轴器 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
D.
垫滑块联轴器 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
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【简答题】7 Soon, the marathon started and the young athletes left Cliff far behind . The crowds smiled, and some laughed out loud because he didn’t even run properly. He had the strangest running style ; he ap...
【简答题】Soon, the ____ started and the young athletes left Cliff far behind. The ____ smiled, and some laughed out loud because he didn't even run properly. He had the strangest running style; he appeared to ...
【多选题】Soon, the marathon started and the young__1___ left Cliff far behind. The crowds__2___, and some laughed out loud because he didn't even run properly. He had the strangest running style; he appeared t...
A.
athletes
B.
smiles
C.
shuffle
D.
progressed
E.
attention
【简答题】三极管在发射结 偏、集电结 偏的条件下,具有电流放大作用。
【单选题】If he had come a little early, he the bus.
A.
would catch
B.
would have caught
C.
would have catch
D.
have caught
【多选题】Why did some people laugh at Cliff Young when he was running?
A.
Because Cliff Young didn’t run properly.
B.
Because Cliff Young had the strangest running style.
C.
Because Cliff Young appeared to shuffle.
【简答题】张经理在对Word文档格式的工作报告修改过程中，希望在原始文档显示其修改的内容和状态，最优的操作方法是： A)利用“审阅”选项卡的批注功能，为文档中每一处需要修改的地方添加批注，将自己的意见写到批注框里。 B)利用“插入”选项卡的文本功能，为文档中的每一处需要修改的地方添加文档部件，将自己的意见写到文档部件中。 C)利用“审阅”选项卡的修订功能，选择带“显示标记”的文档修订查看方式后按下“修订”按...
【简答题】在直流环节谐振变换器中,开关频率可以达到多少赫兹?
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