有一批玉米杂交种子的标签标注品种纯度为98.0%,经某检验机构扦样并进行小区种植鉴定(监督抽查),共种植200株,鉴定结果为96.2%,请计算容许误差并对该批种子的纯度做出判定。(注:容许差距的计算公式为T=1.65;√1.92=1.39,√1.83=1.35,√0.98=0.99)
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安装工程脚手架为什么采用系数方法计取搭拆及摊销费?
A team of programmers is involved in reviewing a proposed design for a new utility class. After some discussion, they realize that the current design allows other classes to access methods in the utility class that should be accessible only to methods within the utility class itself. What design issue has the team discovered?()
A. Tight coupling
B. Low cohesion
C. High cohesion
D. Loose coupling
E. Weak encapsulation
F. Strong encapsulatio
在牵引其它故障车辆时,须选择好合理的钢索和保持安全的车距,并且故障车上必须有可靠的制动、转向、停车装置和操作人员,牵引距离不应过长。
A. 正确
B. 错误