对电源变压器各绕组电压进行测量时,其输出的空载电压值()。
A.不允许超过标称值
B.应超过标称值的10%
C.略高于标称值但不超过10%
D.允许波动±7%
参考答案:C
The great achievements in recent 30 years have proved that the reform and open policy is a vital measure that ________ the national conditions of China.
A.fits into
B.turn into
C.break into
D.look into
干法脱硫塔反复再生后,产品气中的H2S()时,说明该塔脱硫剂基本失去有效硫容,应及时更换脱硫剂。
A.>6μL/L
B.>14μL/L
C.>20μL/L
D.>460μL/L