A．凝固、液化和凝华
B．熔化、汽化和凝华
C．汽化、凝固和升华
D．熔化、液化和升华
答案：A
Mr. Black built a nice house _______ a gift _______ his wife _______ show his deep love.[ ]
A. as; of; on
B. for; as; to
C. for; by; on
D. as; for; to
少量装卸货物后，假定KM不变，则船舶的GM值将（）。
A.增加
B.减小
C.不变
D.变化趋势不定
