妊娠38周正常妊娠的羊水量约为()
A.500ml以下
B.500~800ml
C.1000ml
D.1200ml
E.1500ml
参考答案:C
The students shouted with ________ when they heard the ________news.
A.excited; exciting
B.excitement; excited
C.excitement; exciting
D.exciting; exciting
汽车维修标准体系是在汽车维修专业范围内按标准对象、标准项目、标准级别与性质及相互间内在联系编制成的系统性技术文件。