更多"The construction o f a 5-million-to"的相关试题:
[单项选择]The Bessemer process for (converting) iron to steel (was invention) of enormous importance (because) it led to many (significant) changes in industrial processes.
A. converting
B. was invention
C. because
D. significant
[单项选择]_________ that of iron construction, the technology for constructing building with reinforced concrete developed rather rapidly.
A. Dissimilar
B. Different
C. Not likely
D. Unlike
[单项选择]Liquid hydrogen should be stored in stainless steel tanks with double walls filled with __________.
A. insulation
B. module
C. accessory
D. capsule
[单项选择]The new building here are all reinforced with steel, ______ safety in case of an earthquake.
A. for the sake of
B. for good
C. for instance
D. for the better
[单项选择]Iron and steel are flexible. But they are not as flexible ______ rubber.
A. as
B. to
C. for
D. by
[单项选择]Pigiron, wrought iron, and steel contain iron carbides made up of ______ of carbon.
A. (amounts are different
B. ( different amounts that
C. ( different amounts
D. ( which amounts are different
[单项选择]On turning the corner, we saw the road ______ steeply.
A. departing
B. descending
C. decreasing
D. depressing
[简答题]求证：O（f（n））+O（g（n））=O（max{f（n），g（n）}）。
[单项选择]设力F1，F2及点O都在某平面上，F1，F2不平行，其交点为A，且F1，F2对点O的力矩相等，下述说法正确的是（）。
A. 对于过点O且垂直于此平面的直线上任一点B，必有MB(F1)=MB(F2)
B. 对于OA直线上的任一点B，必有MB(F1)=MB(F2)
C. 对过直线OA且与此平面垂直的平面上任一点B，必有MB(F1)=MB(F2)
D. 除O点外，不存在另一点B，使MB(F1)=MB(F2)
[判断题]执行程序段G98 G83 X4.0 Y5.0 Z-20.O R3.O Q5.O F200后，刀具返回刀初始平面。
[简答题]用分子轨道理论估计N2，O2，F2，O22+和F2+等是顺磁分子还是反磁分子。
[单项选择]The construction of the transcontinental railroad took ______.
A. 9 years
B. 4 years
C. 7 years
D. 3 years
[判断题]若在XY平面逆向铣削R25的整圆，可编程为N36 G91 G03 X0 Y0 R25.O F130。
[单项选择]Dawson was dissatisfied with soft iron pitons because ______. ( )
[单项选择]The hill was once rich with iron.
A. abundant
B. destitute
C. enough
D. sufficient
[单项选择]The construction might produce the following harmful effects EXCEPT ______.
[单项选择]Hugh-Leifson设计的O-F培养基中加入的指示剂为
A. 酚红
B. 亚甲基蓝
C. 溴麝香草酚蓝
D. 溴甲酚紫
E. 结晶紫
[单项选择]A shift from native bronze to iron artifacts took place under the influence of cultural borrowings.
A. transition
B. transmission
C. transaction
D. transference
[单项选择]Iron replaced stone and timber in the building of bridges because iron was considered ______
A. more beautiful
B. much stronger
C. easier to transport
D. new and modern
