单项选择题
压电式传感器既可用于动态测量又可用于静态测量
A.对
B.错
压电式传感器既可用于动态测量又可用于静态测量
A.对
B.错
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单项选择题
The maternal and fetal components of the placenta are
The maternal and fetal components of the placenta are
A.decidua basalis and villous chorion
B.decidua parietalis and tertiary chorionicvilli
C.decidua capsularis and villous chorion
D.decidua basalis and secondary chorionic villi