FLEX属于()
A.肌电小腿假肢
B.储能脚
C.单轴踝
D.万向踝
E.定踝软跟脚
参考答案:B
You’d better ______ your score and see if you have passed the exam.
A.add up to
B.add to
C.add up
D.add in
NTC-290发动机缸径是5(1/2)英寸,行程是6英寸,合多少mm,多少cm?