冠心病劳力型心绞痛发作时()
A.肺毛细血管楔压增高
B.肺动脉压增高
C.右房压增高
D.外周动脉压增高
E.以上四项都存在
参考答案:A
根据句子及首字母提示补全单词。
1. The twins are b_____ lovely girls.
2. I like drawing and I am good a_____ it.
3. John is my b_____ friend of all the classmates.
4. Her best friend is f_____ than she is.
5. That is very i_____ for me to learn English well.
世界某一区域标准化团体所通过的标准称为()。
A.地方标准
B.地区标准
C.专业标准
D.行业标准