【简答题】主减速器及锥齿轮差速器总成装配,按 H=S+E-X 选取调整垫片及分割调整垫片的作用是A. 调整主动齿轮与从动齿轮的啮合状态 B. 调整轴承预紧度的大小 C. 调整差速器壳拧紧力矩 D. 调整差速器壳拧紧力矩 E. D、 调整齿轮端面跳动 F. 调整齿轮端面跳动 G. 调整差速器壳拧紧力矩 H. 调整齿轮端面跳动
【单选题】Dow Chemical objected to the export of natural gas from the U.S. to foreign countries. What does the economic analysis of the export of natural gas from the U.S. suggest the effect of those exports w...
A.
The export of natural gas from the U.S. will decrease the supply of natural gas available to Dow Chemical and other users of large amounts of natural gas and increase the price of natural gas in the U.S.
B.
Dow Chemical does not directly use natural gas, but does use electricity that can be generated by natural gas, so the effect on Dow Chemical will depends on alternative means of producing electricity.
C.
The transportation costs of exporting natural gas from the U.S. to Asia and Europe will keep the price of natural gas in the U.S. relatively low, so Dow Chemical will benefit from that low price.
D.
The export of natural gas from the U.S. will eventually deplete U.S. supplies of natural gas so Dow Chemical will have to find other sources of energy.