压力与工作绩效之间的关系呈U型。()
参考答案:错
If you are weak ____ a subject, ______your teacher for advice can help.
A.to, asking
B.in, ask
C.to, to ask
D.in, asking
静脉输液首先宜选用
A.全血
B.血浆
C.右旋糖酐
D.等渗盐水加入1.25%碳酸氢钠溶液
E.5%葡萄糖溶液