皮皮学，免费搜题
登录
搜题
【单选题】
果实的维管束通常位于( )A.
外果皮表面
B.
外果皮中
C.
中果皮内
D.
内果皮内方
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】关于扭矩的符号下列哪种说法正确的是( ).
A.
用右手的四指指向扭矩的转向,若大拇指的指向与截面外法线的方向相同时,扭矩为正
B.
用右手的四指指向扭矩的转向,若大拇指的指向与截面外法线的方向相反时,扭矩为负
C.
用右手的四指指向扭矩的转向，若大拇指的指向与截面外法线的方向相反时,扭矩为正
D.
确定扭矩正.负符号的方法称为右手螺旋法则.
E.
确定扭矩正.负符号的方法称为左手螺旋法则.
【简答题】Listen to the dialogues and choose the best answer toeach question from the four choices marked A, B, C and D.A. Learn how to make small talk. B. Take it easy and just go to the party. C. Try to mak...
【单选题】Listen to the conversations twice and choose the best answer to each question from the four choices marked A, B, C and D.
A.
He doesn't want to attend the party.
B.
He doesn't know what to buy as a gift.
C.
He doesn't know when to attend the party.
D.
He doesn't know whether he should take his kids to the party or not.
【单选题】关于 turtle 库,哪个选项的描述是错误的?
A.
turtle 绘图体系以水平右侧为绝对方位的 0 度
B.
turtle 库最早成功应用于 LOGO 编程语言
C.
turtle 库是一个直观有趣的图形绘制函数库
D.
turtle 坐标系的原点默认在屏幕左上角
【单选题】关于turtle库，哪个选项的描述是错误的？
A.
turtle 库是一个直观有趣的图形绘制函数库
B.
turtle 坐标系的原点默认在屏幕左上角
C.
turtle 绘图体系以水平右侧为绝对方位的 0 度
D.
turtle 库最早成功应用于 LOGO 编程语言
【多选题】Listen to the four telephone conversations and tick the expression you have heard.
A.
How do you spell that?
B.
Could you spell your name, please?
C.
M for Madrid.
D.
Did you say the 21st?
E.
Let me just check that.
F.
Could you repeat that, please?
相关题目：