测定免疫浊度，形成浊度的关键是（） A.反应温度 B.pH C.抗原和抗体的比例 D

pause

单词拼写。

1.He came to a p       in reading and then went on reading. 2.How was it that she could t_____such noise?  3.Heavy rain p       the possibility of continuing the game. 4.A wage rise of 5% represents an a       increase of 250 for the lowest paid workers. 5.Hong Kong is very proud and p       to host her significant event. 6.Next Tuesday is the          (截止日期) for sending in your application. 7.As a leader,it’s wrong to           (滥用) the power at any time. .The robbers tried to          (抢劫) me of the bike but a policeman saved me. 9.The doctor told her to watch out for          (症状) of  measles . 10.We should have           (预见) this trouble months ago and made provisions for it.

硅酸盐类水泥

—Have you got used to the Chinese food, Robert?

—Yes, but I don't like ________ when a Chinese host keeps serving me the food I don't like.

A．this

B．that

C．those

D．it

挤密桩地基包括()。

A、灰土桩地基

B、砂石桩地基

C、水泥粉煤灰碎石桩地基

D、夯实水泥土复合地基

E、粉煤灰地基

承运易腐货物时，在货物运单、货票、封套上应加盖什么戳记、符号？符号代表什么意思？