国内信用保险项下融资业务中涉及的契约关系包括（） A.贸易双方的赊销贸易契约。 B.卖方企业与保险公司的信用保险契约。 C.卖方企业与银行的融资契约。 D.银行与保险公司的赔款转让契约。
蒸馏法测定原油含水率是根据油水的（）不同。 密度。 粘度。 沸点。 熔点。
A radio medical advice service（）ships of all nationalities and no charge is made for this service. is available to。 is available for。 are available to。 are available for。
简述炼焦耗热量的主要影响因素。
When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（） During operation at low speed。 During operation at rated speed, but low power output。 During acceleration。 All of the above。
蒸馏法测定原油含水率的仪器由（）等组成。
