Compared with the network planning method, the bar chart schedule planning method has the disadvantage of (). A. the duration of planned work cannot be expressed intuitively.

Characteristics of the progress plan of the crossing chart of the test center. Analytic crossplot is the simplest and most widely used traditional schedule planning method. Although many new planning techniques have appeared, crossing diagrams are still widely used in the field of architecture. The progress line (crossing chart) in the crossing chart progress plan corresponds to the time coordinate, which is intuitive and easy to understand the intention of the plan. However, the crossing chart planning method failed to pass the rigorous calculation of time parameters and could not determine the key work, key route and time difference of the plan. Therefore, the correct option is d.