氟蛋白泡沫的抗烧性为()。（A）5min （B）8min （C）9min （D_爱下问搜题

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问题单项选择题

氟蛋白泡沫的抗烧性为()。

（A）5min

（B）8min

（C）9min

（D）11min

答案

参考答案：B

单项选择题 A1型题

下列对“气虚”的解释哪项最恰当（）。

A.宗气不足

B.真气不足

C.中气下陷

D.元气不足

E.精气不足

选择题

— It's said that scientists have ______ a way to deal with H1N1 (甲型H1N1流感).

— Really? That's great! [ ]

A. caught up with

B. come up with

C. agreed with

D. kept up with