问题
选择题
What _____ bowl of noodles would you like, small or large? [ ]
A. kind
B. size
C. colour
D. time
答案
答案：B
搜题请搜索小程序“爱下问搜题”
What _____ bowl of noodles would you like, small or large? [ ]
A. kind
B. size
C. colour
D. time
答案：B
="4" cm,
="9" cm,
="14" cm，试求沙摆的振动周期和摆长.（g="10" m/s2）