用半角量具和水平仪测量龙门刨床工作台V型导轨面时，如果气泡向（）偏移，则半角偏大。
A、左
B、右
C、上
参考答案：B
A．He’’s studying for a test.
B．He lost his notes.
C．He missed the class.
D．He’’s doing research on alternative.
农业社会化服务的主要方式？
