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单项选择题

指挥员在听到“右舷有人落水”的报告后，应立即下令：
A、左满舵，停车
B、右满舵，停车
C、左满舵

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单项选择题
Linda Evans was my best friend－like the sister I never had. We did everything together: piano lessons, movies, swimming, horseback riding.
When I was 13, my family moved away. Linda and I kept in touch through letters, and we saw each other on special time－like my wedding and Linda's. Soon we were busy with children and moving to new homes, and we wrote less often. One day a card that I sent came back, stamped "Address Unknown." I had no idea how to find Linda.
Over the years, I missed Linda very much. I wanted to share happiness of my children and then grandchildren. And I needed to share my sadness when my brother and then mother died. There was an empty place in my heart that only a friend like Linda could fill.
One day I was reading a newspaper when I noticed a photo of a young woman who looked very much like Linda and whose last name was Wagman－Linda's married name. "There must be thousands of Wagmans," I thought, but I still wrote to her.
She called as soon as she got my letter. "Mrs. Tobin!" she said excitedly, "Linda Evans Wagman is my mother."
Minutes later I heard a voice that I knew very much, even after 40 years, laughed and cried and caught up on each other's lives. Now the empty place in my heart is filled. And there's one thing that Linda and I know for sure: we won't lose each other again!
They haven't kept in touch____.（　　
A.forabout40years
B.forabout27years
C.sincetheygotmarried
D.sincethewriter'sfamilymovedaway
多项选择题
下列有关刚性屋面防水层分格缝的叙述中，不正确的是（  ）。
A、分格缝可以减少刚性防水层的伸缩变形，防止和限制裂缝的产生。
B、分格缝的设置是为了把大块现浇混凝土分割为小块，简化施工。
C、刚性防水层与女儿墙之间不应设分格缝，以利于防水。
D、防水层内的钢筋在分格缝处也应连通，保持防水层的整体性。
单项选择题
以下哪项不是锂聚合物电池的优点？
A、不易燃
B、能量密度高
C、重量相对较轻
D、几乎没有记忆效应
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