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【单选题】在Pro/E 4.0零件造型草绘环境中，草绘工具栏不包括以下哪个工具命令（）？
A.
尺寸显示开/关工具
B.
栅格显示开/关工具
C.
约束显示开/关工具
D.
图形显示开/关工具
【单选题】As the competition for admission to Canada's post-secondary institutions heats up, parents are searching for new ways to give their kids an edge (优势)．Growing numbers are finding the solution in a long...
A.
They want to make their children become more competitive in the future.
B.
They want to have their own time to enjoy life.
C.
They want to spend less money in the children's education.
D.
They want to spend more money in the children's education.