使用Z525立钻,由机动进给改用手动进给时,必要首先先()机动进给。
A、起动
B、停止
C、下压
D、上推
参考答案:B
给缺铁性贫血患者使用维生素B12属于()
A.选用药物不当
B.合并用药不当
C.用药过量
D.重复用药
E.无必要使用价格昂贵的药品
My parents ____ inHong Kong. They were born there and have never lived anywhere else. [ ]
A. live
B. lived
C. were living
D. Will live