"双20标准"是指中国人民银行规定国家助学贷款违约率达到（），且违约学生达到20人的

最大钻柱重量是在标准规定的钻井绳数下，正常钻进或进行起下作业时，大钩所允许承受的最大钻柱在（）的重量。

A.大钩上

B.空气中

C.泥浆中

D.转盘上

康有为、粱启超倡导变法的首要目的是[ ]

A、挽救国家危亡          

B、发展资本主义   

C、推翻封建专制        

D、引进西方学说

下列属于人兽共患病病毒的有：（）。

A.口蹄疫病毒

B.狂大病病毒

C.SARS病毒

D.鸭肝病毒

右下图为某地地质构造简图，读图完成下列小题。

如果③是石灰岩，则④为（）

A.花岗岩

B.板岩

C.石英岩

D.大理岩

A client with ulcerative colitis is chatting with the nurse. Which of the following statements indicates the client understands the lifestyle modifications he needs to make()

A. "I will have to stop smoking. "

B. "I can eat popcorn for an evening snack. "

C. "I may have coffee with my meals. "

D. "I am allowed to have alcohol as long as I only drink wine. \