质量为2.5g的氢气和氦气的混合气体,盛于某密闭的气缸里( 氢气和氦气均视为刚性分子的理想气体).若保持气缸的体积不变,测得此混合气体的温度每升高1K,需要吸收的热量等于2.25R(R为摩尔气体常量). 由此可知,该混合气体中有氢气_  g , 氦气_ g , 若保持气缸内的压强不变,要使该混合气体的温度升高1K,则该气体将吸收_ 的热量(氢气的Mmol = 2×10－3 kg , 氦气的Mmol = 4×103 kg) .

在相同的温度和压强下,各为单位体积的氢气(视为刚性双原子分子气体)与氦气的内能之比为_,各为单位质量的氢气与氦气的内能之比为_.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

容器中贮有1mol的理想气体，温度t=27℃，则分子平均平动动能的总和为（）。

1mol刚性双原子理想气体，当温度为T时，每个分子的平均平动动能为（）。

1mol刚性双原子理想气体，当温度为T时，每个分子的平均平动动能为：（）