慢性宫颈炎的主要症状是
A.血性白带
B.性交后出血
C. * * 分泌物增多
D.盆腔部下坠痛
E.外阴瘙痒、灼热
参考答案:C
Marsha thought her friends would do something to celebrate her birthday, but they just gave her a birthday card.
A.correct
B.honest
C.quick
D.special
高压以上锅炉一般安全性能较差的是受热强的水冷壁管。