劳动过程中的有害因素是()
A.通风换气不良
B.视觉紧张
C.炭疽杆菌
D.微波
E.噪声、振动
参考答案:B
.
—___________ is the population of the United States?
—I don’t know exactly, but I’m sure that it has __________ population than China.
A.How much; much less
B.How many; fewer
C.What; much less
D.What; a much smaller
三十二岁初产妇,孕7周时超声提示双胎妊娠,孕19周外院诊断羊水过多由乡镇医院转入。查体:子宫张力高,宫底达36cm,孕妇不能平卧,两胎儿胎心好。
如果早孕期超声提示单绒毛膜双羊膜囊双胎,该病例最可能诊断为()
A.胎儿畸形
B.双胎输血综合征
C.选择性生长受限
D.单绒毛膜双单羊膜囊双胎
E.镜像综合征