变压器的有载调压开关大修时的接头接触电阻值不大于()
A.500微欧
B.700微欧
C.300微欧
参考答案:A
下列腧穴中,不在足太阳膀胱经第一侧行线上的腧穴是()。
A.膀胱俞
B.肺俞
C.大椎
D.大杼
E.风门
Following a year of fast development, by the first quarter of this year, China has had about 1,100 e-commerce websites .
A.China had about 1,100 e-commerce websites by the end of last March
B.by the end of the first quarter of this year, China has had about 1,100 e-commerce websites
C.by the end of this recent past March, China has about 1,100 e-commerce websites
D.by the end of this first quarter, China had about 1,100 or so e-commerce websites