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【单选题】
某女,33岁,刷牙经常出血,临床诊断为牙龈炎,应建议她多长时间做一次洁治A.
1～2个月
B.
2～3个月
C.
6～12个月
D.
12～24个月
E.
24个月以上
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】在 EDTA配位滴定中
A.
酸效应系数愈大，络合物的稳定性愈大
B.
酸效应系数愈小，络合物的稳定性愈大
C.
pH值愈大，酸效应系数愈大
D.
酸效应系数愈大，络合滴定曲线的 pM 突跃范围愈大
E.
以上均不是
【多选题】What were the causes of the War of Independence?
A.
The economy in the 13 colonies developed very fast.
B.
The British government was to bring the development under control.
C.
The British government imposed new taxes and burdens to the colonies.
D.
The colonists rallied behind the slogan“No taxation without representation” ( 无代表权， 不纳税）
【多选题】What were the causes of the War of Independence?
A.
The economy in the 13 colonies developed very fast.
B.
The British government was to bring the development under control.
C.
The British government imposed new taxes and burdens to the colonies.
D.
The colonists rallied behind the slogan“No taxation without representation”
【单选题】What were the causes of the American Civil War?
A.
Britain demanded tax payments for tea
B.
The North and South could not reach an agreement on slavery
C.
Generals Lee and Grant had a Gentleman ’ s disagreement which turned sour.
D.
The South planned to establish a seperate government in Richmond
【简答题】What were the causes of the War of Independence?
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