二期梅毒的皮疹特点是:()
A.斑疹
B.丘疹
C.斑丘疹
D.多形态
E.脓疱疹
参考答案:D
Premier Wen Jiabao has strongly advised greater efforts to ease poverty, __________ the environment and adjust(调整) the economic structure in southwest China’s Guizhou Province.
A.reserve
B.preserve
C.deserve
D.observe
利用结构化方法进行数据分析时,常用的两种工具是数据流图和__________。