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问题 单项选择题

单级主减速器的装配调整应先进行（）。

A.主从动锥齿轮啮合调整后进行差速器的装配调整

B.差速器的装配调整，后进行主从动锥齿轮啮合调整

C.两种方法均可

答案

参考答案：B

单项选择题

Signs and symptoms of retinal detachment include which of the following

A. Painless decrease in vision, a veil over the visual field, and flashing lights.
B. A veil over the visual field, increased intraocular pressure, and yellow-green halos around visual images.
C. Photophobia, yellow-green halos around visual images, and blurred vision.
D. Unilateral eye inflammation, a cloudy cornea, and a moderately dilated pupil.
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单项选择题

先天性脑积水突出的眼征是（）

A.上睑下垂

B.落日征

C.眼肌麻痹

D.复视

E.突眼
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