— I can't find my _____________.
— You're wearing them.[ ]
A. books
B. boots
C. dress
答案:B
B型超声检查从妊娠22周起胎儿双顶径每周约增加()
A.0.20cm
B.0.12cm
C.0.10cm
D.0.22cm
E.0.25cm
每月对高压设备主导电回路,重点是电气连接部件,进行一次()并有台帐记录。
A、测温检查
B、测试检查
C、清扫