测量外圆时，常用的量具有游标卡尺百分尺卡尺等；测量内孔时，常用的量具有（），塞规
参考答案：游标卡尺
Mr Black is a careful and experienfed engineer, so he is often _____ to finish some
challenging tasks. [ ]
A. appreciated
B. approached
C. appointed
D. agreed
莱菔子的功效是（）
A.消食和中、化痰除痞
B.消食化积、活血祛瘀
C.消食导滞、疏肝下气
D.消食化积、降气化痰
E.行气导滞、涩精止遗
