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问题 单项选择题

产业结构演进论根据产业结构演进的特点，将经济发展划分为五个时期；其中高度化结构阶段的标志是( )。

A．当代高技术

B．工业技术装备普遍扩散

C．以农业为主体

D．完善的高技术体系

答案

参考答案：D

单项选择题

UML-based tools are often used for J2EE/.NET application analysis and design, both because UML’s object orientation is ideal for the J2EE/.NET implementation (66) and because of the expanding scope and complexity of today’s enterprise endeavors. (67) the approaches diverge at the coding/implementation phase, a common set of analysis and design techniques applies to both J2EE and.NET.
The use of a virtual machine (VM) architecture is also common to J2EE and .NET. Application development tools (68) intermediate-level code instead of platform-specific binary code, which means the VM interprets that code in real time or performs Just-In-Time (JIT) compilation; the Microsoft VM always runs JIT-compiled code. This VM-based model results in (69) -independent applications and is conducive to the late-binding technique that’s (70) to the OO approach.

A．Although

B．However

C．But

D．Thus
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