机构具有确定运动的条件是机构的自由度等于1。
A. 对
B. 错
When is Double Ninth Festival?
A. September 9 of the lunar calendar.
B. August 15 of the lunar calendar.
C. May 5 of the lunar calendar.
D. January 15 of the lunar calendar.
In additional to “Double Ninth Festival”, how can we say 重阳节 in English?
A. Nine Nine Festival.
B. Two Nine Festival.
C. Two Ninth Day.
Double Ninth Day.
Pick out customs of ancient Double Ninth Festival.
A. Climb mountains and overlook views.
B. View and admire chrysanthemum.
C. Drink chrysanthemum wine.
D. Wear cornel.
微信支付 
支付宝支付