了解胎儿肾成熟度最常用（）。A.检测羊水中卵磷脂/鞘磷脂比值 B

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问题单项选择题

了解胎儿肾成熟度最常用（）。

A.检测羊水中卵磷脂/鞘磷脂比值

B.检测羊水中肌酐值

C.检测羊水中胆红素类物质

D.检测羊水中淀粉酶值

E.检测羊水中脂肪值

答案

参考答案：B

单项选择题

Which of the following statements can best summarize the implications of Paragraph 2

A．Texans are so conceited that they blindly and subjectively consider everything Texan to be inclusively Texan.

B．Texans pride themselves on being superior to other Americans who are not as rich as Texans.

C．Texans thumb down on all non-natives and regard them as being less educated and resourceful.

D．Texans are crude in nature, savage in behavior, and conceited in personality.

问答题简答题

金属导体，电缆屏蔽层及金属线槽（架）等进入机房时，应做什么连接？