本次大赛使用的螺纹润滑剂又称()。
A.二硫化钼
B.凡士林
C.石墨
D.二硫化硅
参考答案:A
-- How do you find the new job?
-- It’s hard to find a satisfying job, so I hardly care what it is _____ I can make money.
A.unless
B.even if
C.however
D.as long as
对系统性红斑狼疮的诊断最特异的检查项目是
A.抗U1RNP抗体B.抗核抗体C.类风湿因子D.抗双链DNA抗体E.抗RNP抗体