马王堆汉墓位于长沙市哪个区？

按要求改写句子。

1. He goes to school on foot every day. (改为同义句)

   He ______ ______ school every day.

2. My aunt wants to go there by plane. (对画线部分提问)

    ______ ______ your aunt ______ to go there.

3. It takes us about twenty minutes to get to school on foot. (对画线部分提问)

    ______ ______ ______ it ______ us to get to school on foot?

4. Jane often flies to Japan. (改为同义句)

    Jane often goes to Japan ______ ______.

5. My uncle lives ten miles from his factory. (对画线部分提问)

    ______ ______ ______ your uncle ______ from his factory?

铸造金属全冠牙体制备时牙合面应磨除

A．0.8～1.0mm

B．0.3～0.5mm

C．1.2～1.5mm

D．0.6～0.7mm

E．0.1～0.2mm

某种光学元件有两种不同透明物质I和透明物质II制成，其横截面积如图所示，O为AB中点，∠BAC=30°，半圆形透明物质I的折射率为，透明物质II的折射率为n₂。一束光线在纸面内沿O点方向射入元件，光线与AB面垂线的夹角到θ时，通过观察发现此时从AC面恰好无光线射出，在BC面有光线垂直射出；

①该透明物质II的折射率n₂；

②光线在透明物质II中的传播速率大小；

③光线与AB面垂线的夹角θ的正弦值。

电缆金属护层的单独接地极与架空避雷线接地体之间应保持（）间距。

A.1～3m

B.3～5m

C.2～5m

D.0.5～1.5m

质询分为计划质询和结果质询两部分。