当证书签名名册发以后，一般来说，期望在整个有效期内都有效。认证机构无权撤消原有的证书

甘草附子汤证的临床表现有（）

A.午后潮热

B.汗出短气

C.不呕不渴

D.恶风不欲去衣

E.小便不利

生物在适应环境的同时，也能够______环境。

旋回圈是指船舶以固定的舵角和航速作（）旋回时，船舶重心处所经过的轨迹。

A．360°

B．270°

C．180°

D．90°

(31) analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the (32) for designing and constructing an improved system. (33) is such a technique. The emphasis in this technique is process-centered. Systems analysts draw a series of process models called (34) . (35) is another such technique that integrates data and process concerns into constructs called objects.

（35）是（）

A. Structured analysis

B. Information Engineering

C. Discovery Prototyping

D. Object-Oriented analysis

目前我国的用电负荷分为哪几类？