对燃油锅炉,当油压力低于规定值时,雾化情况恶化,易造成(),燃烧时冒黑烟。
参考答案:熄火
The dream quickly gave way to a cold number: the house they wanted ______ $52,000 more than their budget.
A.cost
B.took
C.spent
D.required
患者,男,47岁。腰膝酸软、畏寒肢冷,阳痿、早泄,夜尿增多,尿频,舌质淡苔白,脉沉迟无力。用药首选()
A.干姜
B.细辛
C.肉桂
D.吴茱萸
E.小茴香