慢性萎缩性胃炎的肉眼病变为()
A.胃黏膜薄而平
B.黏膜呈褐色
C.黏膜表面呈细颗粒状
D.黏膜下血管分支清晰可见
E.黏膜皱襞粗大
参考答案:A, C, D
The school advisers help you talk through your problem but they don't give you any direct ___ . [ ]
A. solution
B. target
C. measure
D. function
电气设备爬电距离与电器的额定绝缘电压或工作电压、( )和绝缘材料有关。
A.爬比距离
B.对地距离
C.电气间隔
D.污染等级