【单选题】__ avec Jacques, j'ai appris qu'il avait vécu presque toute sa vie en Chine.
【单选题】()装配就是将若干个零件、组件安装在另一个基础零件上而构成部件的过程。
【单选题】AIDS is not only causing millions of death to human beings, but also ______.
A.
speeding the development of society
B.
slowing down file development of society
D.
breaking the balance of nature
【单选题】Human beings also have hardware and software. __________ is to human beings what software is to computer.
【判断题】连杆就是由连杆体、连杆盖、螺栓和螺母等零件刚性的连接在一起,在运动过程中,这一刚性连接体就是一个构件,就是一个独立的运动单元。
【单选题】轴类零件用 长 V形块 定位,能 限制 ( )个自由度。
【单选题】According to the passage, anthropologists believe that human beings ________.
A.
have some traits in common
B.
are born with diverse cultures
C.
are born without a fixed nature
D.
change their characters as they grow up