天丝的特性是什么?
参考答案:
天丝时从天然植物里面提取的一种天然纤维,它透气性好,手感光滑,穿着舒适,但牢固性差,有退色现象。
每天机体合成的蛋白质中有肌肉蛋白()
A.10~11kg
B.1.2~1.5g/(kg·D.
C.2.0~2.5g/(kg·D.
D.20g
E.50g
A crew member has suffered frostbite to the toes of the right foot. Which is NOT an acceptable first aid measure?().
A.Rub the toes briskly
B.Elevate the foot slightly
C.Rewarm rapidly
D.Give aspirin or other medication for pain if necessary