皮皮学，免费搜题
登录
搜题
【单选题】
晚上,人在教室通过窗玻璃看到自己的像,室内灯光越亮像就越清晰,下列对该像描述正确的是A.
所成的像是实像
B.
室外越亮像就越清晰
C.
像的形成原因是光的反射
D.
人越靠近窗玻璃像就越大
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
【单选题】Which of the following about phonological items is RIGHT?
A.
All the phonological items are not isolated from each other, but are of the equal importance.
B.
Generally speaking, sounds are equal to letters.
C.
English consonants can be classified according to the manner of articulation.
D.
Fluency is the most essential measurement of pronunciation.
【单选题】已知数列{a n }是各项均为正整数的等比数列，数列{b n }是等差数列，且a 6 =b 7 ，则有（ ）
A.
a 3 +a 9 ≤b 1 +b 10
B.
a 3 +a 9 ≥b 4 +b 10
C.
a 3 +a 9 ≠b 4 +b 10
D.
a 3 +a 4 与b 1 +b 10 的大小关系不确定
【简答题】已知S n 是等比数列{a n }的前n项和，S 4 、S 10 、S 7 成等差数列. (I )求证而a 3 ,a 9 ,a 6 成等差数列； (II)若a 1 =1，求数列{a 3 n }的前n项的积
【单选题】Which of the following about phonological items is RIGHT? ·
A.
English consonants can be classified according to the manner of articulation. ·
B.
Generally speaking, sounds are equal to letters. ·
C.
Fluency is the most essential measurement of pronunciation. ·
D.
All the phonological items are not isolated from each other, but are of the equal importance.
【简答题】活性污泥生长曲线各个时期的特点是什么?
相关题目：
参考解析：
知识点：
题目纠错 0
发布
