因结构原因不能进行内部检验的容器，可只进行耐压试验和外壁无损检查，一般每隔（）一次。

关于化学肥料的下列叙述不正确的是（　　）

A．复合肥是两种或两种以上化肥的混合物

B．磷肥能促进作物根系发达，增强抗寒抗旱能力

C．氮肥能促进作物茎、叶生长，叶色浓绿

D．长期施用硫酸铵会使土壤板结酸化

支架系统

某综合建筑地上15层，地下1层，框架结构，总建筑面积15000m2，建筑高度为50m。首层、二层、三层设计为商场，四层、五层为办公室及辅助用房，六至十五层为民用住宅。该建筑内设有室内外消火栓系统、火灾自动报警系统、消防应急照明、消防疏散指示标志、灭火器等消防设施及器材。

根据上述案例，回答下列问题：

下列属于列入国家颁布的淘汰目录的灭火器有（）。

A．酸碱型灭火器

B．清水型灭火器

C．化学泡沫型灭火器

D．四氯化碳灭火

明洞拱部回填应两侧对称分层夯实，每层厚度不大于（），两侧回填土面的高差不得大于（）

A、0.3m；0.5m

B、0.25m；0.75m

C、0.5m；1.0m

Developing reliable software on time and within (66) represents a difficult endeavor for many organizations.

Usually business solutions have three main aspects: people, (67) ,and technology. The main reason for failing software projects has little to do with technology and tools, and much to do with lack of process (68) . Experience has shown that introducing new technology and tools in an immature or undisciplined environment is likely to increase the chaos. CASE tools are not enough. "A fool with a tool is still a fool !"

Structured method was the first wave of the software industry. This was the beginning of transforming software development from a" (69) industry" to mass production. Software process movement if the second wave in the software industry. The process maturity movement prepares the way for the third wave of the software industry :"software industrialization". Software development will become like an assembly and manufacturing process. A cfiticalenabling factor is adisciplined software engineering . process with predictable quality, (70) and functionality.

（69）处填（）。

A．college

B．family

C．workshop

D．cottage