皮皮学，免费搜题
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【单选题】
用几个投影可以准确表达空间形体的形状和大小?A.
一个投影
B.
两面投影
C.
三面投影
D.
至少两个面投影
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Reading good books for a few hours every day can make a ______to children. [ ]
A.
problem
B.
difference
C.
product
D.
harm
【单选题】You are looking for the bar, how do you ask for directions?
A.
Just a moment, please……luggage cart
B.
Excuse me, which way to the bar?
C.
There is a post office near here.
D.
Let me introduce some Chinese food for you.
【单选题】The housing market has been for two years propping up consumers' spirits while the rest of the economy lies exhausted on the floor, still trying to struggle to its feet. According to the National Asso...
A.
the boom of real estate activity.
B.
the statistics on home prices.
C.
the role of housing market.
D.
the degree of consumer spirits.
【多选题】对于在一个公历年度内，不可认定为一般纳税人的是（ ）。
A.
除个体经营者以外的个人
B.
从事货物生产或提供应税劳务的纳税人，其年应纳增值税项目的销售额超过100万元的
C.
经常发生应税行为的非企业性单位
D.
不经常发生应税行为的企业如从事建筑安装，医疗服务等单位
【单选题】I don’t think it to stay up late in the night and sleep until midday the next day.
A.
make a difference
B.
makes good sense
C.
makes trouble
D.
make profit
【简答题】设序列x(n)=2δ(n+1)+δ(n)-δ(n-1)，则X(e jω )| ω=0 的值为______。
【单选题】The housing market has been for two years propping up consumers' spirits while the rest of the economy lies exhausted on the floor, still trying to struggle to its feet. According to the National Asso...
A.
the boom of real estate activity.
B.
the statistics on home prices.
C.
the role of housing market.
D.
the degree of consumer spirits.
【单选题】小明每天早上 7 : 50 从家里出发,到距家 1000 米的学校上学,每天行走速度为 80 米 / 分。一天小明从加出发 5 分钟后,爸爸以 180 米 / 分的速度去追小明,并且在途中追上了他。 爸爸追上小明用了多长时间?
A.
6分钟
B.
4分钟
C.
5分钟
D.
8分钟
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