离合器分离时间不宜过长,一般不超过()s。
A.5
B.10
C.15~20
D.30
参考答案:C
——I can’t _______ another task, now I have more than I can do.
—— In this way, I will ask someone else.
A.take on
B.take over
C.take up
D.take off
患者女性,34岁,头晕乏力4周,如诊断极重度贫血,则血红蛋白
A.<20g/LB.<30g/LC.30~59g/LD.60~90<140g/LE.>90g/L