锅炉上装有两个安全阀时，两个都按较低值定压。( )
参考答案：错
As a matter of fact, the unemployment figures are not_____ related to the rise in prices.
A．necessarily
B．importantly
C．totally
D．eventually
可防止糖酵解的抗凝剂为
A．EDTA/氟化钠抗凝剂
B．肝素
C．草酸钾
D．柠檬酸钠抗凝剂
E．EGTA
