生产时，烘梗丝机热资换体排冷凝水装置疏水阀后的两个（）应自于常开状态。
参考答案：截止阀
I have ______ money than you, but I have ______ friends.
A．a little, a few
B．a few, more
C．less, more
D．less, much
呈分叶状，有囊性感、无痛，好发于四肢的病变是 ( )
A．皮内痣B．交界痣C．混合痣D．黑色素瘤E．脂肪瘤
