一令纸两面印刷后就是（）。A、2000印张 B、500印张 C、1000印张 D、250印

下列不属于中证规模指数的是( )。

A．中证100指数
B．中证200指数
C．中证300指数
D．中证500指数

如果预测经济景气下降，在股票投资中下列行业中具有吸引力的是（）。

A．旅游行业

B．公用事业

C．建筑业

D．交通运输业

PH定位校准的原则是什么？

设计如下图所示的双角钢T形截面压弯构件的截面尺寸。截面无削弱，节点板厚12mm。承受的荷载设计值为：轴心压力N=38kN，均布线荷载q=3kN/m。构件长Ⅰ=3m，两端铰接并有侧向支承，材料用Q235一B·F钢。构件为有长边相连的、两个不等边角钢2∟80×50×5组成的T形截面如题图所示。

当截面抵抗矩叫ω_2x=15.55cm。，i=2.57cm，A=12.75cm²时，N/N_EX=0.2时，进行弯矩作用平面内稳定性验算，角钢肢2的应力与下列（）接近。

A．184.4N/mm²

B．191.2N/mm²

C．202.3N/mm2

D．211.7N/mm²

Microsoft’s COM is a software (146) that allows applications to be built from binary software components. COM is the underlying architecture that forms the foundation for higher-level software services, like those provided by OLE. COM defines a binary standard for function calling between components, a way for components to dynamically discover the interfaces implemented by other components, and a mechanism to identify components and their interfaces uniquely.
OLE is a compound (147) standard developed by Microsoft. OLE makes it possible to create (148) with one application and link or embed them in a second application. Embedded objects retain their original format and (149) to the application that created them. Support for OLE is built into the Windows and MacOS Operating Systems. A (150) compound document standard developed mainly by Apple and IBM is called OpenDoc.

A．characteristics

B．address

C．page

D．links