出血包扎时松紧要合适,既要( ),又不阻断肢体的血液循环。
A.止痛
B.止庠
C.止痉
D.止血
参考答案:D
--Can I help you?
--I'd like to buy a present for my father's birthday, ___________ at a proper
price but of great use.
A.one
B.anyone
C.that
D.everything
润滑脂分油量越大,胶体()越差。