选择题:After he gave a report about the school, Mr Wang _

题目内容:
After he gave a report about the school, Mr Wang _______ the visitors around it.

A.went on to show
B.went on showing
C.went on with showing
D.kept on showing
参考答案:

30. (判断题) 三位换向阀的阀芯未受操纵时,其所处位置上各油口的连通方式就是它的滑阀机能。( )

30. (判断题) 三位换向阀的阀芯未受操纵时,其所处位置上各油口的连通方式就是它的滑阀机能。( )(本题2.0分)A. 对B. 错

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