某对称三相负载作三角形()连接,接在线电压为380V的电源上,测得三相总功率为6KW,每相功率因数0.8。则负载的相电流和线电流的值符合下列选项()
A. 11.4A,6.58A
B. 6.58A,11.4A
C. 6.58A,6.58A
D. 11.4A,11.4A
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体现益气摄血法的代表方剂是()
A. 当归补血汤
B. 固冲汤
C. 玉屏风散
D. 补中益气汤
E. 补阳还五汤
下面哪种现象不受光周期的影响?()
A. 群聚
B. 蜕皮换羽
C. 开花
D. 睡眠
An indication of an overloaded main propulsion diesel engine is ()
A. white smoke in the exhaust
B. high exhaust gas pyrometer readings
C. sparks in the exhaust
D. blue smoke in the exhaust