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【单选题】
Unfortunately, when I dropped in, Dr. Green ______, so we only had time for a few words.A.
just left
B.
has just left
C.
had just left
D.
was just leaving
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【简答题】Your suggestion is a good one, but there are some (practice) difficulties for the time being.
【单选题】Your suggestion is______,though it might be rather costly.
A.
grand
B.
vigorous
C.
feasible
D.
reliable
【单选题】Your suggestion is reasonable, I don’t agree with you().
A.
but
B.
though
C.
although
D.
too
【简答题】直齿圆柱齿轮啮合画法中,两个相互啮合的圆柱齿轮,在投影为圆的视图中,两个()相切。
【简答题】根据车辆宽度,宽度为3.0M的是 () 型车。
【判断题】直齿圆柱齿轮啮合画法中,两个相互啮合的圆柱齿轮,在投影为非圆的视图中,如果画成剖视,则一个齿轮的齿顶线与另一个齿轮的齿根线之间,有0.25mm的径向间隙。
A.
正确
B.
错误
【单选题】We think that your suggestion is______.
A.
acceptable
B.
to accept
C.
accepting
D.
accepted
【简答题】相互啮合的齿轮啮合区画法规定如下: a.在垂直于圆柱齿轮轴线的投影面(反映圆)的视图中,两分度圆应( )并用( )线绘制,啮合区内的齿顶圆用( )线绘制,也可省略不画,( )圆全部不画。 b.在剖视图中(非圆视图),在啮合区内,在啮合区要画( )条线,( )条粗实线、( )条点画线、( )条虚线。分度线用一条( )线绘制,两个齿轮的齿根线均用( ...
【简答题】Your suggestion is a very good (solve) to my problem.
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