传统社会规范要求女性在公共场合的坐姿是（）。 A.上身保持正直，双腿45度斜角并拢

中国的科研工作者还是得拿出办奥运会的劲，真抓实干，切实创造有利于科学创新进步的良好学术氛围。这样，______中国本土20年内能不能拿到诺贝尔奖，______有利于中国社会的进步和科技的发展，舍此之外，任何豪言壮语都容易沦为忽悠。
填入横线部分最恰当的一项是

A．无论 也
B．不管 也
C．毕竟 都
D．不管 都

用5.4克某三价金属与稀硫酸反应，生成0.6克氢气，则此金属的相对原子质量为（　　）

A．54

B．60

C．27

D．18

The software architecture of a program or computing system is the structure or structures of the system, which comprise software ______, the externally ______properties of those components, and the relationships between them.The architecture is not the operational software. Rather, it is a ______ that enables a software engineer to: analyze the ______ of the design in meeting its stated requirements, consider architectural alternatives at a stage when making design changes is still relatively easy, and reduce the ______ associated with the construction of the software.

A. changeability B. effectiveness C. testability D. functionality

进行绕组各分接位置电压比的测量时，要求电压比测试仪的精度不低于0.2%电压比电桥精度不低于（）。

A.0.1%

B.0.2%

C.0.3%

D.0.5%

查人民网得知：杜丽于（）年进入山东理工大学。

A.2002

B.2004

C.2006

D.2008