题目内容
(请给出正确答案)
[单选题]
电压力锅SS5057P的功率是多少瓦()
A.900w
B.1000w
C.1100w
D.1500w
答案
B、1000w
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A.900w
B.1000w
C.1100w
D.1500w
B、1000w
125s;而现场实际测量转20r的时间为50s,问该表计误差是多少()。
A.25%
B.20%
C.150%
D.60%