《安全生产法》规定,生产经营单位应在较大危险因素的生产经营场所和有关设施、设备上,设置明显的()
A、安全宣传标语
B、安全宣教挂图
C、安全警示标志
D、生产厂标
参考答案:C
既有泻火凉血,活血祛瘀,又能清泄湿热的药物是
A.栀子
B.丹皮
C.紫草
D.蒲黄
E.大黄
. He was just about to give up and return to his bedroom for a good rest ________ he had a bright idea.
A.but
B.while
C.until
D.when