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【单选题】
下列关于分散系的叙述不正确的是（ ）A.
胶体区别于其他分散系的本质特征是分散质的微粒直径在10-9～10-7m之间
B.
用平行光照射FeCl 3 溶液和Fe（OH） 3 胶体，可以加以区分
C.
把FeCl 3 饱和溶液滴入到蒸馏水中，以制取Fe（OH） 3 胶体
D.
题干中的图片显示的是树林中的晨曦，该现象与丁达尔现象有关
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举一反三
【单选题】Scott McDonald fired one of his employees because the employee
A.
didn't accomplish his job well.
B.
drove too fast.
C.
covered up his illness.
D.
cheated when he asked for leave.
【单选题】W h ich one is not the reason for studying abroad?
A.
Learning language
B.
Populating stereotypes
C.
Gaining perspectives
D.
Broadening horizon
【简答题】Part A Write a note to one colleague of yours, because you have taken one of his books from his wife while he is not at home.
【判断题】为了防止跑料、串科事故的发生,在投料时,必须认真检查各相关管道及阀门,保证管道使用正确、阀门开关无误,投料过程必须由当班班长或指定操作人员进行监督复核,并在操作记录上注明。
A.
正确
B.
错误
【单选题】小男孩伸出一只手去拿桌子上的书。
A.
The young boy reached to the book on the desk with one of his hands.
B.
The young boy reached for the book on the desk with one of his hands.
C.
The young boy reached for the book on the desk within one of his hands.
D.
The young boy reached to the book on the desk within one of his hands.
【简答题】Soon after Dave left college, one of his uncles, 1 was rich and had no children of his own died and 2 (leave) Dave a lot of money, so he decided to set up his own real estate agen...
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