同事间建立信赖关系,合宜的做法是()。
A.要敢于当面批评同事的不当言行
B.同事间相互认同
C.恩威并用,以威信促信赖
D.敢于两肋插刀,赴汤蹈火
参考答案:B
George said that he would come to school to see me the next day, but he ______.
A.wouldn't
B.didn't
C.hasn't
D.hadn't
下列哪种缓冲对决定着血浆的pH()
A.KHCO3/H2CO3
B.Na2HPO4/NaH2PO4
C.NaHCO3/H2CO3
D.血红蛋白钾盐/血红蛋白
E.Na-蛋白质/H-蛋白质