消防中队在执勤战备管理中，应时刻处于（）状态，以保证完成执勤备战任务。A、一级战备

阅读下面短文,将所给的五个句子填入空白处,是短文意思完整正确.(计5分)

Now satellites are helping to forecast(预报) the weather . 小题1:______The satellites take pictures of the atmosphere(大气),because this is where the weather forms(形成). 小题2:______So the scientists there can see the weather of any part of the world and tell how the weather will change.

Today, nearly five hundred weather stations in sixty countries can receive satellite pictures. When they receive the new pictures ,they compare(比较) them with the earlier ones . 小题3:_______This may mean that the weather forecast, 小题4:_______

So the weather satellites are of a great help to the scientists at the station. 小题5:________Now they can make good forecasts for 3 or 5 days .Soon perhaps, be  able to forecast the weather for a week or more ahead(提前).

A．In the past they could forecast the weather for about 24 or 48 hours earlier.

B．They send these pictures to the weather station .

C．they can tell people about it .

D．They are in space , and they can reach any part of the world .E. Perhaps they may find that the clouds have changed during the last few hours.

保险的（）职能只是对社会已有的财富进行再分配，而不能增加社会财富。

A.基本

B.派生

C.补偿

D.一般

在《探究求合力的方法》的实验中，其中的二个步骤是：

①在水平放置的木板上垫一张白纸并固定好，把橡皮条的一端固定在木板上，另一端拴两根细线，通过细线同时用两个弹簧秤互成角度地拉橡皮条，使它与细线的结点达到某一位置O点，在白纸上记下O点和两个弹簧秤的读数F₁和F₂。

②只用一个弹簧秤通过细线拉橡皮条，使它的伸长量与用两个弹簧秤拉时伸长量一样记下此时弹簧秤的读数F和细线的方向。

以上两步骤均有疏漏，请指出疏漏：

在①中是                              

在②中是                              

直肠癌转移到肝

A．代谢性酸中毒
B．代谢性碱中毒
C．呼吸性酸中毒
D．呼吸性碱中毒
E．低钙血症

在许多有食用价值的藻类中，发菜属于____藻门，海带属于____藻门。