生物绘图要求用2B铅笔,部分教材写的是HB铅笔,但是从来没有见过用3H铅笔的.
选D
在用显微镜观察人体口腔上皮细胞,画图一般用什么笔
在用显微镜观察人体口腔上皮细胞,画图一般用什么笔
A.钢笔 B.圆珠笔 C.3H铅笔 D.HB铅笔
A.钢笔 B.圆珠笔 C.3H铅笔 D.HB铅笔
政治人气:273 ℃时间:2019-11-15 07:35:31
优质解答
我来回答
类似推荐
猜你喜欢
- 1已知函数y=2x-3 分别求当x=-2分之1
- 2谈谈你对人才的看法,最好是四字词语
- 3全集U={1,2,3,4,5,6,7,8,9},(CuA)∪(CuB)={2,3,4,6,7,8},(CuA)∩B={3,7},(CuA)∪B={1,3,5,6,7,8,9}.
- 4I have been used to invisible mode,have been used to loneliness,also have been used to my life of living alone.
- 5The girl ------to sing the song in the next room A.often practises b.is used C.is often heard
- 6潜艇的下沉和上浮是通过____来实现的
- 7x分之一减y分之一等于7,则x-3xy-Y分之3x+5xy-3y=?
- 8数轴上一个点到原点是距离为5,则这个点所表示数的绝对值为
- 9一个数被五除余一被三除余一则这个数至少是几
- 10(跟据首字母写出最后一个单词)don't cross the road now .you must w什么 for the green light