皮皮学，免费搜题
登录
搜题
【简答题】
不同的凸透镜其焦距一般是不相同的，请探究凸透镜的焦距。 （1）焦距的大小与凸透镜的哪些因素有关？请提出你的一个猜想。____________________________ （2）小红同学用凸凹程度相同、半径不同的两个凸透镜会聚太阳光，多次测量后，测得会聚点到光心的距离都是10cm，由此你得出的结论是：_____________________________ （3）小用半径相同、凸凹程度不同的两个凸透镜会聚太阳光，多次测量后，测得较凸的那个凸透镜会聚点到光心的距离是5cm，另一个是8cm，由此你得出的结论是：__________________________。 （4）这两位同学在本实验中都用到了物理学中常用的一种方法，这种方法是：___________________。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】. 所谓黑恶势力保护伞,主要是指国家公职人员利用手中权力,()
A.
参与涉黑涉恶违法犯罪
B.
包庇、纵容黑恶犯罪、有案不立、立案不查、查案不力
C.
为黑恶势力违法犯罪提供便利条件
D.
帮助黑恶势力逃避惩处等行为
【简答题】The piston areas of dead-weight gauges are sometimes difficult to
determine with sufficient accuracy by direct measurement. One method
used for this purpose is to balance the gauge with a known mass...
【简答题】skilled →(1) balance →(2) sufficient →(3) agreeable →(4) understanding →(5) As for the children of the (6) workers, relatively few of them are able to secure a place in college. Friendships are hard t...
【单选题】104 Alternative procedures performed as Chestnut & Co were unable to attend the inventory count were unable to provide sufficient appropriate audit evidence regarding the inventory balance in the stat...
A.
Audit opinion: Qualified Disclosure in the auditor’s report: Basis for qualified opinion
B.
Audit opinion: Disclaimer Disclosure in the auditor’s report: Basis for disclaimer of opinion
C.
Audit opinion: Qualified Disclosure in the auditor’s report: Key audit matters section
D.
Audit opinion: Disclaimer Disclosure in the auditor’s report: Emphasis of matter
【简答题】在记账或结账以后如果因记账凭证所记金额小于应记金额，而会计科目没有错误，由此导致记账发生错误时，可将少记金额用蓝字补填一张记账凭证，在摘要栏中注明补记凭证和日期，据以（）登记入账。
【单选题】某同学在学习计划中写道:“我在本学期内,除了课堂知识外,还要大量学习计算机知识,包括‘C语言与编程’‘网络数据库’‘多媒体制作'和‘3D动画’,”对该做法最恰当的评论是 。
A.
该同学学习热情高，应该予以鼓励。
B.
该学习计划脱离实际，目标任务过高，在一个学期内是完不成的，应当修改。
C.
学习计划是给教师看的，与实际无关。
D.
世上无难事，只要肯登攀。
【单选题】A company has 31 December as its accounting year end. On 1 January 20X5 a new machine costing $2,000,000 is purchased. The company expects to sell the machine on 31 December 20X6 for $350,000. The rat...
A.
$391,000
B.
$248,000
C.
$263,000
D.
$719,000
【单选题】Which of the following amounts to sufficient consideration in the law of contract? A. Performing an act in return for a reward B. Claiming an extra promised amount to complete an existing contractual ...
A.
B.
C.
C
相关题目：