当耐张段长度超过800m时，一个耐张段内正馈线补强线段的总数量安全值为（）。
A、0个
B、2个
C、4个
D、8个
参考答案：C
产后坐浴何时开始( )。
A．产后7天 B．产后6天 C．产后5天D．产后4天 E．产后3天
Like everyone else, we have our anxieties and sorrows. But ______ we are quite fortunate compared with some people.
A．as a result
B．on the whole
C．in the meanwhile
D．as a matter of fact
