排出体内氟的主要途径是（） A.粪便 B.肾脏--尿 C.汗腺--出汗 D.头发 E

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The train was wonderful and the food was great. We ate great meals cooked by 小题1: ! For the first few hundred kilometres of the journey, the   小题2: was very colourful. There were   小题3: and the soil was dark red. After that, it was desert. The sun 小题4: , there was no wind and there were no clouds in the sky. Suddenly, it looked like a place from another time. We saw 小题5:  farms which were built more than a hundred years ago. 

价值工程的目标在于提高工程对象的价值，它追求的是( )。

A．满足用户最大限度需求的功能

B．投资费用最低时的必要功能

C．寿命周期费用最低时的必要功能

D．产品研究费用最低时的必要功能

肺腺癌的特点是：（）

A．女性常见

B．发病率最高

C．周围型多见

D．早期可发生血行转移

电梯运行时的振动加速度是指其（）。

A.最大值的单峰值

B.最大值的双峰值

C.平均值的单峰值

D.平均值的双峰值

婚姻家庭法律关系的主体