My mother _________ some dumplings yesterday.[ ]
A. makes
B. maked
C. made
D. maded
答案:C
急性阑尾炎早期症状是()
A.发热
B.腹痛
C.腹胀
D.腹泻
E.恶心呕吐
离心式压缩机停电后,应检查轴瓦上油情况,维持轴瓦温度不高于()℃。
A.45
B.55
C.65
D.75