The camshaft is used to open and close the valves with the motion of the pistons.
查看答案
DOHC means that there are two camshafts in the cylinder block.
A. 对
B. 错
Cylinder block or engine block is actually a complex machined casting unit.
A. 对
B. 错
输血目的不包括
A. 增加血红蛋白，促进携氧功能
B. 补充白蛋白
C. 供给各种凝血因子
D. 降低血液黏稠度，改善微循环
E. 补充血容量，增加心排出量
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