The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.

Stanley has gained 8 pounds a year ever since he turned 18. How much weight has Stanley gained since he turned 18 ？（）
(1) Stanley now weighs twice what he weighed when he turned 18.
(2) Stanley is now twice the age he was when he turned 18.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

下列选项中，不属于分程控制系统的特点是（）。

A、可以改善调节品质

B、提高系统的安全可靠性

C、调节范围稳定不变

D、只有一个调节器