反应呈阳性的物质是().
A.苯醌
B.萘醌
C.菲醌
D.羟甲基蒽醌
E.羟基蒽醌
参考答案:E
The nurse should encourage a client with a wound to consume foods high in vitamin C because this vitamin()
A. restores the inflammatory response.
B. enhances oxygen transport to tissues.
C. reduces edema.
D. enhances protein synthesis.
PLC5的工作电压为交流电()
A、24V
B、36V
C、220V
D、380V