骨骾患者首先考虑钳取骨刺

Why should the government, rather than industry or universities, provide the money to put a network of supercomputers in place Because there is a range of problems that can be attacked only with the massive data-managing capacity of a supercomputer network. No business or university has the resources to purchase by itself enough machines for a whole network, and no business or university wants to invest in a part of a network if no mechanism exists for coordinating establishment of the network as a whole.
Which one of the following indicates a weakness in the argument

A．It does not furnish a way in which the dilemma concerning the establishment of the network can be resolved.

B．It does not establish the impossibility of creating a supercomputer network as an international network.

C．It fails to address the question of who would maintain the network if the governments, rather than industry or universities provides the money for establishing it.

D．It takes for granted and without justification that it would enhance national preeminence in science for the government to provide the network.

E．(E) It overlooks the possibility that businesses or universities, or both, could cooperate to build the network.

There are ______ books in our school library than in yours. [ ]

A. much more

B. a lot of more

C. a lot more

D. many more

在宜昌市桥边镇有一个电解氧化铝厂，该厂主要用电解氧化铝的方法生产铝，电解氧化铝的化学方程式为2Al₂O₃4Al₂O₃+3O₂↑，这个反应中Al₂O₃，Al，O₂的质量比是[ ]

A．102:27:32

H．43:27:24

C．2:4:3

D．204:108:96

对SF₆断路器补气，不可用SF6气瓶及管道对断路器直接补人气体。

混凝土受压弹性模量最后计算精确至（）

A、1MPa

B、10MPa

C、100MPa

D、1000MPa