惰轮位于主动齿轮和从动齿轮之间,从动齿轮()
A.转动方向与主动齿轮相同
B.转动方向与主动齿轮相反
C.保持静止
D.使从动齿轮转动加快
参考答案:A
在《灵枢·本神》所述五脏虚实病证中,导致“五脏不安”的脏器有()
A.心
B.肺
C.肾
D.脾
E.肝
—What's his brother?
—He is a teacher.He__________ maths at a school.[ ]
A. taught
B. has taught
C. teaches
D. will teach