给水泵的任务是将除过氧的饱和水,提升至一定()后,连续不断地向()供水,并随时适应锅炉对给水量的变化。
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The connecting rob is fitted between the crosshead and the crankshaftIt transmits the firing force, and together with the crankshaft convert the () motion to a () motion.
A. rotary;reciprocating
B. up and down;fore and aft
C. fore and aft;up and down
D. up and down;rotary
非ST段抬高性心肌梗死属于()
A. 急性冠脉综合征
B. 不稳定型心绞痛
C. 稳定型心绞痛
D. 缺血性心肌病
E. 慢性冠脉病变