测定泡菜样品中亚硝酸盐的含量时,氢氧化铝乳液的作用是( )
A. 与亚硝酸盐发生颜色反应
B. 吸附泡菜汁中的杂质,使泡菜汁透明澄清
C. 提取泡菜样品中的亚硝酸盐
D. 用于制备标准显色液
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女,26岁,已婚。突发性下腹疼痛2小时,急诊就医,诊断为卵巢囊肿蒂扭转。其蒂的组成为
A. 输卵管、卵巢固有韧带
B. 骨盆漏斗韧带、输卵管、卵巢固有韧带、圆韧带
C. 骨盆漏斗韧带、输卵管、卵巢固有韧带
D. 骨盆漏斗韧带、输卵管、圆韧带
E. 输卵管、卵巢固有韧带、圆韧带
After the concert, the clean-up crew found the ground ______ with papers, bottles and cans.
A. scrubbed
B. scattered
C. littered
D. dispersed
某女,20岁。主诉:每半月“行经” 1次。患者月经期为7天,经净1周后又阴道少量出血,色红质粘稠,如经如带,淋漓二三天即净。诊断是
A. 赤白带
B. 经漏
C. 经间期出血
D. 月经先期
E. 月经过少
They ______ for an early end to the fighting which had brought about a great loss to the city.
A. petitioned
B. reasoned
C. reckoned
D. rebuked