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【单选题】
落叶灌木或乔木,树皮和小枝灰白色。互生,近圆形或三角状圆形,先端急尖,基部心形,,掌状脉,两面通常无毛。花紫红色或粉红色,花冠假蝶形, 2 ~ 10 成束,簇生于老枝和主干上,尤以主干上花束较多,越到上部幼嫩枝条则花越少,通常先于叶开放,但嫩枝或幼株上的与叶同时开放。形态描述的树种 。
A.
香花槐
B.
C.
紫荆
D.
连翘
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【简答题】图示为直齿圆锥齿轮和斜齿圆柱齿轮组成的二级传动。已知轮1为主动,转向如图所示。试求: (1)确定斜齿轮3、4的螺旋线方向,并画在图上(要求中间轴II-II上的轴向力较小); (2)画出齿轮2、3所受各分力的方向;
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【单选题】S4-2.购买需要安装的固定资产,要将其安装成本先记入( ),再转入 “ 固定资产”账户。
A.
“在建工程”账户的借方
B.
“在建工程”账户的贷方
C.
“生产成本”账户的借方
D.
“生产成本”账户的贷方
【简答题】A.The reported hero turned out to be his father. B.He did not understand his father till too late. C.Such misfortune should have fallen on him. D.It reminded him of his miserable childhood, Passage Th...
【简答题】已知在某二级直齿锥齿轮 ——斜齿圆柱齿轮传动中, 1 轮为驱动轮, 3 轮的螺旋线方向如题 图所示。为了使 II 轴轴承上所受的轴向力抵消一部分,试确定 1 轮的转动方向。并将各轮轴向力 F a1 、 F a2 、 F a3 、 F a 4 的方向、 4 轮的螺旋线方向和 1 轮的转动方向标在图中。
【单选题】Which of the following statements is INCORRECT about the boy?
A.
He was chained by his father and stepmother as a punishment.
B.
He was chained with chains and padlocks.
C.
He was unable to unlock and save himself.
D.
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A.
locate one"s birth place.
B.
promote genetic research.
C.
find out if one is the father of a child.
D.
help improve one"s intelligence.
【简答题】His fathe___________ and got him out of jail.
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