停电搬迁的电器设备，如果不需要触及内部，在切断电源后可不进行放电。（）

下图中A～E是制作观察洋葱鳞片叶表皮细胞临时装片的方法步骤图；①～②所示为几位同学在制作临时装片时得到的图像。请据图回答：

（1）正确的实验操作顺序是_________________________________。（填写序号）

（2）A步骤中所滴的液体是_____________。如果制作口腔上皮细胞的临时装片为保持细胞正常的形态，玻片上应当滴加_________________。

（3）进行观察时，图①若要达到图②所示效果，应该将装片向________________移动。

（4）切洋葱时常会流眼泪，原因是洋葱中含有刺激眼睛的物质，那么这些物质存在 于洋葱细胞的__    __中。

在线摄影中，将滤线栅置于胶片与肢体之间，焦点到滤线栅的距离与滤线栅焦距相等，并使X线中心线对准滤线栅中心线。使用滤线栅摄影时，冲洗后的照片有的中心有密度而两侧无密度，有的一边高密度，一边低密度。

射线因素（线质、线量、散射线）对影像信息的影响正确的是（）

A.线质越硬，穿透能力越小

B.线量对影像密度无影响

C.散射线导致照片对比度降低

D.射线量越多，照片密度越小

E.散射线是成像的有用信息

阅读理解

     Adopting a vegan diet dramatically(显著地)reduces one person's impact on the environment.

     It would help deal with the problem of climate change if people ate less meat, according to a

government agency.

     A leaked email to a vegetarian campaign group from an Environment Agency official expresses

sympathy with the environmental benefit of a vegan diet, which bans dairy products and fish.

     The agency also says the Department for Environment, Food and Rural Affairs(DEFRA)is

considering recommending eating less meat as one of the key environmental behavior changes needed

to save the planet.

      It says that this change would have to be introduced"gently"because of"the risk of alienating(使疏远)

the public".

      David Miliband, the Environment Secretary, has raised the issue that farm animals are blamed for

producing large amounts of powerful greenhouse gas, methane, and told farmers they need to do

something about it but the agency's response appears to go further than official advice.

     It has provoked(引起)an immediate response from the National Farmers Union, which said the

suggestion was"simplistic"and"a cause of concern".

     The agency's official was responding to an email from the vegan group Viva, which argues that it

is more efficient to use land to grow crops for direct consumption by humans rather than feeding them

to dairy cows or livestock(家畜)raised for meat.

      The campaign group entered a comment on the Environment Ageney's website saying:"Adopting

a vegan diet reduces one person's impact on the environment even more effective than giving up their

car or forgoing several plane trips a year!Why aren't you promoting this message as part of your

World Environment Day campaign?"

      An agency official replied:"While potential benefit of a vegan diet in terms of climate impact could

be very significant, encouraging the public to take a lifestyle decision as substantial as becoming a vegan

would be a request that few are likely to take up."

       You will be interested to hear that the Department for Environment, Food and Rural Affairs is

working on a set of key environmental behavior changes to mitigate climate change.Consumption of

animal protein has been highlighted within that work.As a result the issue may start to figure in climate

change communications in the future.It will be a case of introducing gently as there is a risk of alienating

the public.

      "Future Environment Agency communications are unlikely to ever suggest adopting a fully vegan

lifestyle, but certainly encouraging people to examine their consumption of animal protein could be a

key message."

      Juliet Gellatley, director of Viva, said, "I think it is extraordinary that a government agency thinks

becoming a vegetarian or a vegan could have such a positive impact on the environment yet it is not

prepared to stand up and argue the case."

      A DEFRA spokesman said:"The government is not telling people to give up meat.It isn't the role

of government to enforce a dietary or lifestyle change on any individual."

患者，男性，30岁，车祸致头面部损伤8小时。查体：患者左面部肿胀明显，眶周、眼睑及结膜下瘀斑、压痛，无复视和眼球运动受限；有张口受限，张口度1.5cm，咬合关系正常。常规行X线检查时，最好拍（）

A.头颅正位片

B.头颅侧位片

C.鼻颏位和颧弓位

D.下颌曲面体层片

E.颅底片

再生塔顶温度越低，越有利于溶剂再生。