急性羊水过多时,正确的是()。
A.多发生在妊娠28~32周
B.下肢及外阴浮肿发生率不高
C.自觉症状轻微
D.产科检查胎心清楚
E.容易发生早产
参考答案:E
用所给动词的适当形式完成句子。
小题1:The teacher told us that the earth (travel) around the sun.
小题2:Students in Yancheng didn’t go to school last Thursday because of the (pollute) air.
小题3:We are not sure if humans (move) to the Mars in the future.
小题4:By the time she left college, she_________(fall)in love with the young man.
小题5:More than one student_________(progress) a lot in English since they became Grade 9 students.
在进行板材的仰焊操作时,不正确的操作是()。
A、采用小的火焰能率
B、选用较细的焊丝
C、选用跟平焊相同的焊嘴
D、每一层熔敷厚度要小