皮皮学，免费搜题
登录
搜题
【单选题】
乘坐自动扶梯时，以下哪种行为属安全性行为?A.
携带宠物乘坐自动扶梯
B.
手推婴儿车或购物车搭乘自动扶梯
C.
将头手伸出扶梯扶手外
D.
在扶梯上嬉戏、打闹
E.
面向梯级方向站立在内，手握住扶手带
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】Which of the following statements is true?（ ）
A.
The White Nile is the trunk of the River Nile
B.
The White Nile is the trunk of the Blue Nile
C.
The White Nile is a branch of the Blue Nile
D.
The White Nile is a branch of the River Nile
【单选题】Which of these statements is true based on the information in the passage?
A.
The earth is one of the oldest planets in our galaxy.
B.
Most scientists believe that there is intelligent life on other planets.
C.
Scientists are trying different ways to find signs of life on other planets.
D.
More advanced civilizations than ours have developed on other planets.
【简答题】阅读下列材料后回答问题：一个体重50Kg的健康人，体内约含有2g铁，这2g铁在人体内不是以单质的形式存在，而是以Fe 2+ 和Fe 3+ 的形式存在．正二价铁离子易被吸收，给贫血者补充铁时，应给予含Fe 2+ 的亚铁盐，如硫酸亚铁．服用维生素C，可使食物中的Fe 3+ 还原成Fe 2+ ，有利于人体吸收． （1）在人体中进行Fe 2+ ① ② Fe 3+ 的转化时，①中的Fe 2+ 作______...
【单选题】The lubricating system for the cylinder walls is different from the bearings in that the oil for former one is supplied in _____ while that for latter one is _____.
A.
sufficient quantity / measured
B.
measured quantity/sufficient
C.
excessive quantity/sufficient
D.
the less quantity the better/the more the better
【单选题】The passage indicates that which of the following is the primary value of the University of Iowa hearing test?
A.
It will reduce misdiagnoses of hard-to-test patients.
B.
It will lead to a cure for congenital deafness.
C.
It will eventually make other means of testing hearing obsolete.
D.
It will win Nobel Prize for outstanding achievement in the field of medicine.
【简答题】根据句意和提示完成句子。 1. The bakery is o the station. 2. The station is b the flower and the chemist. 3. Go a the road,turn left into East Street. 4. Which is the way to the c ? 5. The teacher put the broken c...
【多选题】下面关于[棋盘格]贴图的说法,哪些是错误的 _________。
A.
［棋盘格］贴图将两色的棋盘图案应用于材质。
B.
3ds Max默认［棋盘格］贴图是黑白方块图案。
C.
［棋盘格］贴图是 3D程序贴图。
D.
不可以使用［位图］替换［棋盘格］贴图中的颜色。
【简答题】The radius of the circle O is 2. The chord AB is equal to the chord CD. Both of the distance from the 2 chords to point O are 1. The area range of the quadrilateral ABCD is ___.(英汉小词典:radius半径;chord弦;...
相关题目：