皮皮学，免费搜题
登录
搜题
【单选题】
近用瞳距是指A.
当双眼向前远方平视，双眼视轴达到平行状态时，双眼瞳孔中心之间的水平距离。
B.
当双眼处于注视眼前30 ~ 40mm距离物体状态时， 双眼瞳孔中心之间的水平距离。
C.
在实际配镜中，当遇到明显的双眼不对称、斜视患者和验配渐变焦眼镜时，还需测量其瞳孔中心到鼻梁中线之间的距离。
D.
镜架的两个镜圈的几何中心之间的距离
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】酸和醇脱水生成酯和水的反应称为____。
【单选题】British parents, as the writer described in this passage,______.
A.
give their children little time to develop freely
B.
bring up their children in a simple way
C.
pay no attention to their children's lessons
D.
treat their children as sports players
【简答题】It can be inferred from the second paragraph that multimillionaires' children have [A] little opportunity to develop according to their own inclinations. [B] more opportunity to develop according to t...
【单选题】Handheld wireless phones are popular with most people because______.
A.
they send out a little amount of watt of power
B.
they have many cool shapes and colors
C.
they are small and light
D.
they are easy to buy on market
【单选题】将冷却系统检查仪器和转接头连在膨胀箱盖上,用手动泵打压,达到( )MPa时,限压阀必须打开,说明膨胀箱盖限压功能正常。
A.
0.03～0.05
B.
0.10～0.12
C.
0.13～0.15
【简答题】酯的生成:羧酸和醇在酸的催化作用下脱水生成脂酯的反应称为()。
【简答题】La littérature est principalement au Moyen Âge.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
