【单选题】关于动脉血压形成的机制,以下哪一项是错误的?
A.
动脉血压的形成与心室射血和外周阻力两个因素都有关
C.
在每个心动周期中,左心室内压与主动脉压的变化幅度相同
D.
一般情况下,左心室每次收缩时向主动脉约射出60~80ml血液
E.
左心室的射血是间断性的,而动脉血流量是连续的
【简答题】What is the function of CAM? With computer-aided manufacturing, computers are used to pass ________________ direct to the manufacturing machinery.
【判断题】The advantage of computer-integrated manufacturing software is that it allows computer-aided design machines to communicate directly with computer-aided manufacturing machines.
【简答题】With computer-aided manufacturing, _________ are used to pass work instructions directly to the manufacturing machinery.
【判断题】With computer-aided design, engineers can test computer models digitally before moving new products into the prototype stage.
【简答题】The production lines are (全自动化)with computer-aided machines.
【判断题】Despite its early promise, computer-aided design has not met with much success in increasing productivity.
【简答题】(able) Recent innovations with computer aided design ______ us to produce magazines which are more creative, efficient and cost-effective.