能将FeCl2、FeCl3、AlCl3、MgCl2四种溶液区别开的一种试剂是(

题型:问答题

问题:

能将FeCl2、FeCl3、AlCl3、MgCl2四种溶液区别开的一种试剂是(  )

A.KSCN溶液

B.氨水

C.AgNO3溶液

D.NaOH溶液

考点:设计实验方案及探究实验
题型:问答题

下面关于听证的说法不正确的是:( )

A.某公司申请许可实施一个建设项目,行政机关认为该项目会对周围居民采光造成影响,那么行政机关应当发布社会公告,并举行听证会

B.行政机关欲许可在某地兴建机场,而兴建机场会有噪声污染,则行政机关应当告知附近居民有要求举行听证的权利

C.利害关系人如果在法定期限内提出听证申请,行政机关应当在20日内组织听证

D.如果B项中的附近居民要求组织听证,那么听证费用由附近居民承担

题型:问答题

用于估计病毒感染性强弱和数量的实验方法()

A.蚀斑形成试验

B.TCIDS0或ID50测定

C.ELLSA

D.PCR

E.EIA

题型:问答题

在检修安全气囊系统之前要将蓄电池负极拆下一段时间是为了让ECU内的()充分放电,防止气囊误引爆。

题型:问答题

(Ⅱ)

One day while a girl was walking in the woods she found two starving songbirds. She took them home and put them in a small (31) . She cared for them and felt great love for them.

Once the (32) and per of the two birds flew from the cage. Therefore, (33) he flew close, she grasped him (34) . She felt glad, but suddenly she felt the bird go limp. She opened her hand and (35) in horror at the dead bird.

She noticed the other bird moving back and forth on the edge of the cage. She could feel his great need for (36) . She lifted him from the cage and (37) him softly into the air. The bird circled once, twice, three times.

The girl watched delightedly at the bird’ s enjoyment. Her heart was no longer (38) with her loss. Suddenly the bird flew closer and (39) softly on her shoulder. It sang the sweetest melody that she had ever heard.

The fastest way to (40) love is to hold on it too tightly, while the best way to keep love is to give it WINGS!

37()

A. dropped

B. pulled

C. seized

D. tossed

题型:问答题

除硅芯管外,管道工程铺设完成后,应按邮电部门的规定做()检验,以保证管道的施工质量。

A.试通

B.拉棒

C.牵引

D.拉线

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