Observe the dilemma of the fungus: it
is a plant, but it possesses no chlorophyl. While all other plants put the sun’s
energy to work for them combining the nutrients of ground and air into body
structure, the chlorophylless fungus must look elsewhere for an energy supply.
It finds it in those other plants which, having received their energy free from
the sun, relinquish it at some point in their cycle either to other animals
(like us humans) or to fungi. In this search for energy the fungus has become the earth’s major source of rot and decay. Wherever you see mold forming on a piece of bread, or a pile of leaves turning to compost, or a blown-down tree becoming pulp on the ground, you are watching a fungus eating. Without fungus action the earth would be piled high with the dead plant life of past centuries. In fact, certain plants which contain resins A. the fungus is both helpful and harmful in its effects B. no one understands how a fungus lives C. fungi are not really plants D. the fungus seems to have its own biological laws [单项选择]在周围神经系统中,属于胆碱能神经纤维的是()
A. 所有自主神经节前纤维 B. 所有副交感节后纤维 C. 所有舒血管神经纤维 D. 支配胰腺的所有交感节后纤维 E. 支配所有汗腺的交感节后纤维 [单项选择]慢性支气管炎诊断主要依据于()
A. 病史和体征 B. 血细胞计数分类及生化检查 C. 胸部X线 D. 纤维支气管镜 E. 肺功能检查 [单项选择]以下()无助于减少周期时间。
A. 消除流程浪费 B. 创造持续的工作流程 C. 建立自我管理的小组 D. 提供正确的资源 [单项选择]()是造成损失的直接的或外在的原因,又是损失的媒介物。
A. 风险概率 B. 风险事故 C. 损失 D. 风险因素 [单项选择]18世纪后期,浪漫主义艺术兴起时更多的是关注什么的表现()
A. 线条 B. 空间 C. 色彩 D. 形体 [单选题]微波烟包松散设备的微波杀虫方式中,( )杀虫处于主导地位。( )
A.非热效应 B.热效应 C.温度差 D.压力差 [填空题]1号线集中站设备房SCOM共有两台,一台主用,一台备用。当一台SCOM 故障后,ATS 会显示 色,但不影响列车正常运行
[多选题]生产过程中的辅助系统有()
A.蒸汽系统 B.电力系统 C.水系统 D.空气系统 [多项选择]物料需求计划的基本步骤有( )。
A. 计算物料的毛需求量 B. 经需求量计算 C. 少量计算 D. 批量计算 E. 安全库存量、废弃率和损耗率等计算 [单选题]【单选题】配电线路系指( )及以下配电网中的架空线路、电缆线路及其附属设备等。
A.6kV B.10kV C.20kV D.35kV [多选题]会计凭证的受理应做到()。
A.是否为本单位凭证 B.是否超过存款余额 C.款项来源是否符合规定 D.大小写金额是否一致 我来回答: 提交
|