皮皮学,免费搜题
登录
搜题
【单选题】
用20N的水平推力可推动一个重40N 物体在水平面上匀速滑动。如改用10N的推力来推该物体,则该物体与水平面间的摩擦力的大小为
A.
40N
B.
30N
C.
20N
D.
10N
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
【单选题】()是《子夜》中的主人公,他是小说中人物形象的制高点。
A.
吴荪甫
B.
方鸿渐
C.
许彦成
D.
祥子
【单选题】Where is the bathroom?
A.
It's my bathroom.
B.
This is the bathroom.
C.
My name is Jack.
【简答题】It is ______ that attract vent life.
【单选题】以下关于“根管口”的解释哪个是正确的
A.
根管末端的开口处
B.
髓腔的开口处
C.
髓腔根分叉的位置
D.
髓室和根管交界的部分
E.
根管最细的地方
【单选题】下面的选项中,有哪一项不是有偿新闻的表现?
A.
参加被采访单位安排的在夜总会的娱乐活动
B.
接受劳务费、误餐费等形式的有价证券
C.
以新闻为诱饵换取广告或赞助
D.
接受被采访单位发的小纪念品明信片
【简答题】Complete the sentences with the words from the given paragraphs. Change the form where necessary. The first letter of each word is given. (温馨提示:不需要填写已经给出的单词首字母。) 1. Students have enough as to...
【多选题】What are the time markers in the following paragraph? Before going to the party, each of us prepared a gift. At the beginning of the party, we lit the candles and turned off the light. Then we sang th...
A.
before
B.
at the beginning
C.
then
D.
after
【简答题】Students have enough as to what dreams they would like to p___________. (Para. 1) 2. Miss Wang asked each of us to tell her about a m___________ in our high-school days. (Para. 3) 3. J...
【单选题】Air is released from the unit by a vent. 02010277
A.
Air is related to the vent.
B.
There is a belt on the unit .
C.
The unit can't work without air .
D.
Through the vent,the air is released.
【简答题】教育界对“教学事件”的初认知来自著名教学设计大师 。
相关题目: