中国古典园林起源于()
A.秦汉
B.魏晋南北朝
C.唐朝
D.宋朝
参考答案:A
—I don't know which to buy. Can you give me some advice?
—You _______ try on this T-shirt. It looks nice. [ ]
A. had not better
B. had better not
C. had better
D. had better to
()是非电量保护。
A、主变油温高;
B、主变油位异常;
C、主变绕组温度高;
D、发电机误上电。