以下不符合企业环保物流策略的是（）.A.实施联合一贯制运输 B.使用一次性包装 C.

供给量应比满足机体正常生理的需求量（）是设计婴儿食谱时的基本要求。

A、略低 

B、略高 

C、相同 

D、高出两倍以上

About fifty years ago, plant physiologists set out to grow roots by themselves in solutions in laboratory flasks. The scientists found that the nutrition of isolated roots was quite simple. They required sugar and the usual minerals and vitamins. However, they did not require organic nitrogen compounds. These roots got along fine on mineral inorganic nitrogen. Roots are capable of making their own proteins and other organic compounds. These activities by roots require energy, of course. The process of respiration uses sugar to make the high energy compound ATP, which drives the biochemical reactions. Respiration also requires oxygen. Highly active roots require a good deal of oxygen.The study of isolated roots has provided an understanding of the relationship between shoots and roots in intact plants. The leaves of the shoots provide the roots with sugar and vitamins, and the roots provide the shoots with water and minerals. In addition, roots can provide the shoots with organic nitrogen compounds. This comes in handy for the growth of buds in the early spring when leaves are not yet functioning. Once leaves begin photosynthesizing, they produce protein, but only mature leaves can "export" protein to the rest of the plant in the form of amino acids.

Roots have the ability to________.

A．make proteins

B．obtain fresh air

C．produce inorganic nitrogen

D．carry out activities without energy

对重症肌无力的论述，下列哪一项是错误的( )

A．主要致病的抗体是抗乙酰胆碱(ACR)抗体
B．抗ACR抗体的主要作用是在补体参与下损伤骨骼肌细胞
C．它的发病与胸腺病变有一定关系
D．在病人血清中尚可检出其他自身抗体(如抗胃壁细胞抗体)
E．该病有遗传倾向性

资产评估程序通常包括哪些主要环节

下列关于惯性的说法，正确的是（）

A.只有静止或做匀速直线运动的物体才具有惯性

B.做变速运动的物体没有惯性

C.有的物体没有惯性

D.两个物体质量相等，那么它们的惯性大小相等