我是 LongbridgeAI，我可以总结文章信息。澳大利亚商业信心依然低迷，一项调查显示，4 月份的信心指数从 3 月份的-29 略微改善至-24。由于中东冲突导致能源成本上升，利润率受到挤压，投资计划受到影响。前瞻订单和资本支出等关键指标显著下降，成本急剧上升。澳大利亚储备银行已将利率提高至 4.35%，以应对通货膨胀，这引发了人们对企业将成本转嫁给消费者的担忧
SYDNEY, May 12 (Reuters) - Australian business confidence remained mired in gloom in April, a survey showed on Tuesday, as spiking energy costs from the Middle East war squeezed profit margins and pressured investment plans. The survey from National Australia Bank showed its index of business confidence improved only marginally to -24 in April, having dived 29 points to -29 in March, the