当堤坝临水坡漏洞口多而小且范围较大时,在黏性土料备料充足的情况下,______进行抢护。
A. 塞堵法
B. 盖堵法
C. 戗堤法
D. 反滤层压堵法
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关于DNA的半不连续合成,错误的说法是
A. 前导链是连续合成的
B. 随从链是不连续合成的
C. 不连续合成的片段是冈崎片段
D. 前导链和随从链合成中有一半是不连续合成的
E. 随从链的合成迟于前导链合成
平面闸门安装流程的最后一步是______。
A. 按照预埋件调配止水和支承导向部件
B. 安装闸门拉杆
C. 在门槽内试验闸门的提升和关闭
D. 将闸门处于试验水头并投入试运行
● AC Milan star Kaka says a foot injury is still stopping him from returning to football. He has not played for 32 days. Kaka says he is in a lot of pain. "I hurt myself in an area that we always put pressure on." Kaka once played for a year with a knee injury, but the 26-year-old said this is much worse.● British actress Emma used to spend more time filming than at school. But today she is ready to pay more attention to her studies. This 19-year-old girl will start at the Yale University in the au-turn. "I always loved school. I just want to go back and find what else there is," she said.● Chinese 25-year-old sports star Liu Xiang returned to Shanghai in March. He had a successful foot operation in December in Houston, and spent the next three months there for recovery, and basic training. It is said that a group of doctors are ready to help with Liu"s recovery.● Russian great tennis player Sharapova will not be playing in the MPS Group Championships, which begins in the US on Monday. Sharapova was missing the Sony Ericsson Open the week before last in Miami. She may continue training for the WTA Rome event at the beginning of May. Among the four persons, ______ isn"t a sports star.
A. Sharapova
B. Liu Xiang
C. Emma
D. Kaka
● AC Milan star Kaka says a foot injury is still stopping him from returning to football. He has not played for 32 days. Kaka says he is in a lot of pain. "I hurt myself in an area that we always put pressure on." Kaka once played for a year with a knee injury, but the 26-year-old said this is much worse.● British actress Emma used to spend more time filming than at school. But today she is ready to pay more attention to her studies. This 19-year-old girl will start at the Yale University in the au-turn. "I always loved school. I just want to go back and find what else there is," she said.● Chinese 25-year-old sports star Liu Xiang returned to Shanghai in March. He had a successful foot operation in December in Houston, and spent the next three months there for recovery, and basic training. It is said that a group of doctors are ready to help with Liu"s recovery.● Russian great tennis player Sharapova will not be playing in the MPS Group Championships, which begins in the US on Monday. Sharapova was missing the Sony Ericsson Open the week before last in Miami. She may continue training for the WTA Rome event at the beginning of May. How long has Kaka not played football because of his foot injury
A. More than a month.
B. About a year.
C. Two weeks.
D. Three months.