问答题
选择增塑剂时最重要的是要考虑橡胶和增塑剂的( )性。
选择增塑剂时最重要的是要考虑橡胶和增塑剂的( )性。
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单项选择题
肺表面活性物质的主要性质和作用 A.
.是磷脂,提高肺泡表面张力 B.
.是磷脂,降低肺泡表面张力 C.
.是糖蛋白,提高肺泡表面张力 D.
.是糖蛋白,降低肺泡表面张力 E.
.是糖脂,保护肺泡上皮
肺表面活性物质的主要性质和作用 A.
.是磷脂,提高肺泡表面张力 B.
.是磷脂,降低肺泡表面张力 C.
.是糖蛋白,提高肺泡表面张力 D.
.是糖蛋白,降低肺泡表面张力 E.
.是糖脂,保护肺泡上皮
单项选择题
But as soon as the stranger begins to intrude his ______(偏见) , his definitions, his defects, into the conversation, it is all over.
But as soon as the stranger begins to intrude his ______(偏见) , his definitions, his defects, into the conversation, it is all over.
A.part
B.partial
C.partialities
D.partially