分泌促胃液素的细胞为
A．贲门腺细胞B．主细胞C．C细胞D．黏液细胞
参考答案：C
--- Mom, I still want to watch the football match tonight.
--- The final exams are approaching. _____ you watch the football World Cup every night?
A．Must
B．Can
C．May
D．Need
大夹具张网机的缺点，是容易造成边角网布变形。
