所谓电气隔离防护就是将被保护设备或电路与其他的设备或电路在电气上不完全分开，以防止被

关于内生肌酐清除率的叙述下列哪项是不正确的（）。

A.严重肾功能衰竭时能确切反映GFR

B.与血肌酐浓度有关

C.与尿肌酐浓度有关

D.与尿量有关

E.基本上与GFR变化有平等关系

我国西北地区治理环境的重点是[ ]

A．治理水土流失

B．兴修水利，防止水患

C．高寒草场的保护

D．防治沙漠扩大和草场退化

如果卖方不愿意承担货物装船后发生的风险，可以选用的贸易术语有

A．FOB

B．CFR

C．CIF

D．DAT

E．DDP

我国目前农村合作金融机构向中央银行申请的借款皆为信用借款，主要有三种，其中（）主要解决农村合作金融机构因资金头寸不足而造成的临时性资金短缺。

A、季度性借款

B、年度性借款

C、季节性借款

D、头寸借款

Town T has 20,000 residents, 60 percent of whom are female. What percent of the residents were born in Town T ？（）
(1)The number of female residents who were born in Town T is twice the number of male residents who were not born in Town T.
(2)The number of female residents who were not born in Town T is twice the number of male residents who were born in Town T.

A．条件(1)充分，但条件(2)不充分．

B．条件(2)充分，但条件(1)不充分．

C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．

D．条件(1)充分，条件(2)也充分．

E．条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．