在选择或参考机器设备运杂费率表中的区间费率时,对于()的设备应取费率的下限。
A.体积小
B.体积大
C.量轻价高
D.量重价低
E.运输不便
参考答案:A,C
It is out of question that you ____ Chief Engineer of the railway when Mr. Bell leaves. [ ]
A. are appointed
B. have been appointed
C. will be appointed
D. will appoint
维生素B2缺乏时,可以出现的缺乏症有()
A.毛囊角化
B.脂溢性皮炎
C.皮下出血
D.皮疹
E.对称性皮炎