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为了保证机动车能沿正确的方向行驶，转向系具有重要的意义。（）
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计算题：10t水流经加热器后它的焓后从334.9kJ／kg增至502.4kJ／kg，求在加热器内吸收多少热量？
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人人享受卫生保健是体现（）
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数控机床是采用数字化信号对机床的（）进行控制。
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银行代码的维护应注意什么事项？
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某工程招标时，甲施工单位委派的项目经理没有取得建造师的执业资格，所提供的资格证书复印件是伪造的。则甲施工单位违背了合同订立中的（）。
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Asking Seller to Cover Insurance for 150% of the Invoice Value Dear Sirs, We are pleased to advise you that concerning your S/C No．819 for 500 sets color TV, we have issued confirmed, irrevocable L/C No．919 for US ＄50 000, through the Bank of China, London, valid to October 20. Please see to it that the goods are shipped before 20th October and the insurance is to be covered for 150% of the invoice value against All Risks．We know that according to your usual practice, you insure the goods only for the 110% of the invoice value, therefore, the additional premium will be for our account. Please arrange the insurance accordingly and inform us your shipment date after closing the insurance.Yours faithfully,
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根据下列化合物的结构，判断哪种物质的荧光效率最大（）
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财务情况说明书是对企业一定会计期间内生产经营、资金周转和利润实现及分配等情况的综合性说明。
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对于风机与电机润滑油系统检查哪些项目？