Many of the activities performed during the preliminary investigation are still being conducted in （）, but in much greater depth than before. During this phase, the analyst must become fully aware of the （） and must develop enough knowledge about the （） and the existing systems to enable an effective solution to be proposed and implemented. Besides the （） for process and data of current system, the deliverable from this phase also includes the （） for the proposed system.

and must develop enough knowledge about the（）and the existing systems to enable an effective solution to be proposed and implemented.

A．hardware environment

B．testing environment

C．software environment

D．business environment

汗证营卫失调的主症是（）。

A.自汗为主，头部、肩背部明显

B.自汗为主，汗出遍身而不温

C.盗汗为主，手足心热

D.自汗或盗汗，头部、四肢为多

E.盗汗为主，遍身汗出