【判断题】【消耗次数：1】
菱苦土的主要成分是氢氧化镁.
①
正确
②
错误
参考答案：
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相关题目
【单选题】
关于氢氧化钙基根管封闭剂，下面描述错误的是
①
具有较强的抗菌作用
②
在根管内逐渐凝固
③
促进根尖钙化，封闭根尖孔
④
强碱性
⑤
与牙胶尖共同使用可作为永久性根充材料
【单选题】
7. 下列关于氢氧化铝的叙述不正确的是：
①
抗胃酸作用较强，生效较慢
②
口服后生成的AlCl3有收敛作用
③
与三硅酸镁合用作用增强
④
久用可引起便秘
⑤
不影响四环素、铁制剂吸收
随机题目
【单选题】
He told me how he had given me shelter and protection without which I __________ of hunger.
①
would be died
②
would die
③
would have died
④
will die
【单选题】
Candidates are required to ____________ the application form first.
①
take in
②
put in
③
fill in
④
give in
【单选题】
Although Jack made a foolish mistake, we __________ at him.
①
ought to have laughed
②
oughtn’t to have laughed
③
ought to laugh
④
should not to laugh
【单选题】
, the sales manager began his report with the statistics of last month’s sales.
①
By now
②
As usual
③
So far
④
At most
【单选题】
What can I do for you, madam?
①
I want a kilo of apples
②
You can go your own way
③
Thanks
④
Excuse me. I’m busy
【单选题】
we desire that the tour leader __________ us immediately of any changes in plans.
①
inform
②
informs
③
informed
④
has informed
【单选题】
Jack is good, kind, hardworking and intelligent. __________, I can’t speak too highly of him.
①
As a result
②
In a word
③
By the way
④
On the contrary
【单选题】
Scientists say it may be five or ten years __________ it is possible to test this medicine on human patients.
①
since
②
before
③
after
④
when
【单选题】
Most insurance agents would rather you __________ anything about collecting claims until they investigate the situation.
①
don’t do
②
didn’t do
③
would not do
④
do