钢筋加工弯曲90°，其每个弯曲度差值为（）倍的钢筋直径。A、0.35 B、0.5 C

如图，电阻R₁=6Ω，R₂=4Ω，电源电动势为20V，闭合电建后，若电路消耗的总功率为40W，电源输出功率为37.6W，求：电源的内阻r和R₃的阻值分别为多大．

男性细胞内液约占体重的（）

A.10%

B.20%

C.30%

D.40%

E.50%

抗战胜利以后，以蒋介石为首的国民党，在____国的积极支持下，阴谋发动 * * 反人民的__________。

An analyst does research about asset-backed securities. Which of the following statements is most accurate A corporation that raises funds through use of an asset-backed security:（）

A. creates a special purpose vehicle that is a subsidiary of the corporation.

B. no longer owns the assets that serve as collateral for the asset-backed security.

C. uses credit enhancement in the reduction in funding cost compared with the cost of enhancement.

什么叫大地水准面？