皮皮学，免费搜题
登录
搜题
【多选题】
已知一对啮合的标准直齿圆柱齿轮,Z1=20,Z2=52,a=90,则A.
m=2
B.
m=2.5
C.
d1=40
D.
d1=50
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
【简答题】A film featuring a talking mouse appeared in the United States. The character was only a pencil drawing, but it began a fantasy that America and much of the wider world have yet to grow tired of. ____...
【简答题】Most People don’t like mice, but they love one mouse -- Mickey Mouse. In their mind, this mouse is their favourite animal. About 70 years ago, an American man called Walt Disney created（创造） a cartoon ...
【单选题】Hovering the mouse pointer over any program in the Start menu displays a ____ list, which is a list of files that you recently opened using that program.
A.
flash
B.
favorites
C.
pinned
D.
jump
相关题目：