望远镜十字丝中丝的上下两根短丝叫视距丝,它主要是用于测量()用的。
A、高度
B、水平角
C、竖直角
D、距离
参考答案:D
我国沿海软土地基上较为广泛采用的沉桩方法是( )。
A.锤击 B.打桩C.振动 D.压桩
Today’s response to the data access dilemma eschews the traditional archival approach in favor of emerging standards for what are described as the documents of the future: compound documents. Product users and developers hope the latest standards effort--such as OpenDoc and Microsoft Corp.’s Object Linking and Embedding (OLE) will (26) data accessibility. OpenDoc is a standards group (27) a common look and feel throughout documents, even though different applications are used. OLE technologies allow Microsoft to (28) its various software products. Microsoft creates, governs and distributes the OLE capability, which is what most (29) it from the open OpenDoc approach. Thus, users can assemble (30) of varying application to create compound documents. With OLE users can, for example, embed an Excel chart in a Microsoft word report.
A.pieces
B.document
C.content
D.files