通过手臂根围线下部中点,将人体模型侧面厚度()等分做标示线,即胁线。
A.2
B.3
C.4
D.5
参考答案:A
The mathematics problem was too difficult. ______ worked it out.[ ]
A. Many students
B. Few students
C. A few students
D. Some students
文件系统中若文件的物理结构采用顺序结构,则文件控制块FCB中关于文件的物理位置应包括______。 Ⅰ.首块地址 Ⅱ.文件长度 Ⅲ.索引表地址
A.只有Ⅰ
B.Ⅰ和Ⅱ
C.Ⅰ和Ⅲ
D.Ⅱ和Ⅲ