锅炉在升温时通常以()来控制升温速度。
A、削弱燃烧;
B、增加减温水量;
C、提高给水压力;
D、控制升压速度。
参考答案:D
一Have you seen the film Lost on Journey?
一Yeah.amazing! It’s than the films I have ever seen.
A.any less interesting
B.much less interesting
C.no more interesting
D.far more interesting
38个油篓子和一个少女的雕像是哪个城市的标志?