— does your sister do?
— She is a bank clerk. [ ]
A. What
B. Where
C. How
D. When
答案:A
表面灰白色,无光泽,凹凸不平,多孔,体轻,质松易碎,有吸湿性的药材是纵断面具纤维状纹理,显绢丝样光泽的药材是一面有钉头,对面有相应凹窝,断面呈层叠状的药材是集合体呈致密块状,晶形多呈立方体,有金属光泽的药材是
A.石膏
B.自然铜
C.朱砂
D.赭石
E.炉甘石
用于网络测试的DOS命令是( )。
A.sfcB.moveC.pingD.copy