题目:
哪项不是奥美拉唑的不良反应()
A.口干、恶心
B.头晕、失眠
C.胃黏膜出血
D.外周神经炎
E.男性 * * 女性化
答案:
参考答案:C
哪项不是奥美拉唑的不良反应()
A.口干、恶心
B.头晕、失眠
C.胃黏膜出血
D.外周神经炎
E.男性 * * 女性化
参考答案:C
影响生物生活的因素可以分为两类,一类是__________,另一类是_____________(如________)。
一、二级耐火等级的厂房,其防火间距不应小于( )m。
A.6
B.8
C.10
D.12
(10分)粉末状试样A是由等物质的量的MgO和Fe2O3组成的混合物。进行如下实验:
①取适量A进行铝热反应,产物中有单质B生成;
②另取20 g A全部溶于0.15 L 6.0 mol/L盐酸中,得溶液C;
③将①中得到的单质B和溶液C反应,放出1.12 L(标准状况)气体,同时生成溶液D,还残留有固体物质B;
④用KSCN溶液检验时,溶液D不变色。
请回答:
(1)①中引发铝热反应的实验操作是___________,产物中的单质B是_____________。
(2)②中所发生的各反应的化学方程式是_______________________________。
(3)③中所发生的各反应的离子方程式是_______________________________。
(4)若溶液D的体积仍视为0.15 L,则该溶液中c(Mg2+)为________,c(Fe2+)为___________________。
完形填空 | ||||
Boffins are the clever ones in class. They always come out __1__ in tests. To be a boffin, you must be good at all the __2__. Boffins are clever, but are never the most __3__ people in the school. They have friends amongst themselves. __14__ in society, they are normally shy and withdrawn (离群的). Boffins __5__ their studies to the __6__ of other people. Edwin is the __7__ example of a boffin. He has friends, but they are also __8__. Edwin is extremely clever. His voice has a very strong British accent that other people __9__ funny. A boffin's interest is something __10__ other people may not be interested in. For example, they may like to play games on computer that others may find __11__. In their spare time, boy boffins __12__ like playing war games and strategies. Boffins prefer technology such as computers to having sports __13__. Normally, they are not very sporty and are bad at __14__. Boffins also act in a manner that is slightly strange. They don't __15__ what other people will think of them because of these outbursts. While most children take the word "boffin" in a __16__ way, adults, especially teachers, __17__ boffins. Boffins spend their time in class actually __18__ attentively instead of messing around. This is mainly the reason why they appear to be more intelligent than everyone else around them. Although they may not be the most exciting people, I like boffins. They have intelligent __19__ of their own and are not afraid to show them. Boffins are the cleverest ones, and there's nothing bad about __20__ in that way. | ||||
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可挠式内窥镜适用于什么场合?