根据等面积定则，采用自动重合闸可以( )
A．增大加速面积
B．减小加速面积
C．增大减速面积
D．减小减速面积
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APP具体操作流程为：
肝内、外胆管结石形成的主要基础是（）。
A.磷脂增加
B.胆盐增加
C.血胆固醇增加
D.胆盐下降
E.胆汁中大肠杆菌产生葡萄糖醛酸酶的水解作用
Although I love my life, it hasn’t been a lot of fun as I’ve been ill for 28 years. Music has always been a great love of mine and, in my 20s, when my ___36___ was more manageable, I ___37___ ten years as a professional singer in restaurants, playing and singing folk songs. ___38___ that was years ago and times have changed. ___39___ I live with my mother on a country farm. Two years ago, I decided that I would need to have some kind of extra work to ___40___ my disability pension(残疾抚恤金). ___41___ I needed to sleep in the afternoons, I was limited in my ___42___. I decided that I would consider ___43___ to singing in restaurants. My family are all musicians, so I was ___44___ when I went into our local music store. I explained that I wanted to sing again but using recorded karaoke music. I knew that discs were very expensive and I really didn’t have a lot of ___45___ to get started. And ___46___ you find only three to four songs out of ten on a disc that you can ___47___ use. When I told the owner of the shop about my ___48___, he gave me a long, thoughtful ___49___. “This means a lot to you, doesn’t it?” he said. “Come with me.” He led me ___50___ the crowded shop and to a bench with a large professional karaoke box on it. He placed his large hand ___51___ on his treasure and said, “I have 800 karaoke songs in here. You can take your ___52___ and I’ll record them for you. That should get you started.” I ___53___. Thanking him, I made a time with him to listen to all the songs and choose ___54___ that I could sing. I have come full circle with his help. His ___55___ still warms my heart and makes me do just that bit extra, when I have the chance.
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据报道：2009年5月7日下午，我市某气雾剂厂车间内铝粉起火，因工作人员缺乏消防知识，用水灭火，结果发生爆炸。小科查找了有关资料，发现金属铝在加热条件下能和水发生反应，化学方程式为：2Al+6H2O
(1)发生这次爆炸的直接原因是___________________（用化学方程式表示）；
(2)其实，还有些火灾也不能用水灭火，如____________（举 一例）。
气动调节阀正常应（）安装于水平管道卜。
A.水平
B.垂直
C.倾斜
D.正立垂直
女，26岁，因急性阑尾炎，拟在连续硬膜外麻醉下行阑尾切除术。
术前用药选（）
A.氨茶碱、苯海拉明
B.葡萄糖液、胰岛素
C.新斯的明、阿托品
D.苯巴比妥（鲁米那）、哌替啶
E.新斯的明