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【单选题】
男，60岁，煤气中毒一天后来院，深昏迷，休克、尿少、血COHb60%，此急性一氧化碳中毒的病情属( )。
A.
轻度中毒
B.
中度中毒
C.
重度中毒
D.
极度中毒
E.
慢性中毒
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参考答案：
举一反三
【多选题】在滚子推杆盘形凸轮机构设计时，下列作法正确的是 。
A.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “ 失真 ” 现象
C.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
D.
凸轮的基圆半径等于其理论廓线的最小向径
查看完整题目与答案
【单选题】According the two-year-old boy in the interview, what is the reason for the mother wanting her boy to take part in the basketball camp?
A.
His mother is a basketball fan, too.
B.
His mother knows that he is crazy about basketball.
C.
His mother thinks that this can help him grow taller.
D.
His mother expects his to be an excellent basketball player in the future.
查看完整题目与答案
【多选题】在滚子推杆盘形凸轮机构设计时,下列哪些作法是正确的
A.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “失真”现象
C.
凸轮的基圆半径等于其理论廓线的最小向径
D.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
查看完整题目与答案
【多选题】在滚子推杆盘形凸轮机构设计时,下列哪些作法是正确的( )
A.
凸轮的基圆半径等于其理论廓线的最小向径
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “失真”现象
C.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
D.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
查看完整题目与答案
【单选题】The boy, wanting to be independent, _____ his father’s offer to help.
A.
turned away
B.
turned in
C.
turned down
D.
turned out
查看完整题目与答案
【单选题】在滚子推杆盘形凸轮机构设计时，下列哪些作法是错误的（ ）
A.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
B.
凸轮的基圆半径等于其理论廓线的最小向径
C.
滚子圆半径小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆产生 “运动失真”现象
D.
凸轮廓线为外凸结构的凸轮机构，凸轮的实际廓线与理论廓线是法向等距曲线，实际轮廓上各点的曲率半径就等于理论廓线上各点的曲率半径减去滚子圆半径
查看完整题目与答案
【单选题】The boy, wanting to be independent, turned( )his father’s offer of help.
A.
down
B.
over
C.
up
D.
to
查看完整题目与答案
【单选题】According to the twelve-year-old boy in the interview, what is the reason for the mother wanting her boy to take part in the basketball camp?
A.
His mother is a basketball fan, too.
B.
His mother knows that he is crazy about basketball.
C.
His mother thinks that this can help him grow taller.
D.
His mother expects him to be an excellent basketball player in the future.
查看完整题目与答案
【单选题】下面有关凸轮的论述不正确的是( )。
A.
对于从动件为尖顶式的凸轮，其理论轮廓曲线与实际轮廓曲线重合
B.
对于从动件为滚子式的凸轮，其理论轮廓曲线与实际轮廓曲线为法向等距且相距为滚子半径的曲线
C.
对于从动件为平底式的凸轮，其理论轮廓曲线与实际轮廓曲线很接近
D.
以上说法都不正确
查看完整题目与答案
【单选题】The boy wanting to be independent , _____his father’s offer of help .
A.
turned away
B.
turned from
C.
turned down
D.
turned against
查看完整题目与答案
相关题目：
【多选题】在滚子推杆盘形凸轮机构设计时，下列作法正确的是 。
A.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “ 失真 ” 现象
C.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
D.
凸轮的基圆半径等于其理论廓线的最小向径
查看完整题目与答案
【单选题】According the two-year-old boy in the interview, what is the reason for the mother wanting her boy to take part in the basketball camp?
A.
His mother is a basketball fan, too.
B.
His mother knows that he is crazy about basketball.
C.
His mother thinks that this can help him grow taller.
D.
His mother expects his to be an excellent basketball player in the future.
查看完整题目与答案
【多选题】在滚子推杆盘形凸轮机构设计时,下列哪些作法是正确的
A.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “失真”现象
C.
凸轮的基圆半径等于其理论廓线的最小向径
D.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
查看完整题目与答案
【多选题】在滚子推杆盘形凸轮机构设计时,下列哪些作法是正确的( )
A.
凸轮的基圆半径等于其理论廓线的最小向径
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “失真”现象
C.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
D.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
查看完整题目与答案
【单选题】The boy, wanting to be independent, _____ his father’s offer to help.
A.
turned away
B.
turned in
C.
turned down
D.
turned out
查看完整题目与答案
【单选题】在滚子推杆盘形凸轮机构设计时，下列哪些作法是错误的（ ）
A.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
B.
凸轮的基圆半径等于其理论廓线的最小向径
C.
滚子圆半径小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆产生 “运动失真”现象
D.
凸轮廓线为外凸结构的凸轮机构，凸轮的实际廓线与理论廓线是法向等距曲线，实际轮廓上各点的曲率半径就等于理论廓线上各点的曲率半径减去滚子圆半径
查看完整题目与答案
【单选题】The boy, wanting to be independent, turned( )his father’s offer of help.
A.
down
B.
over
C.
up
D.
to
查看完整题目与答案
【单选题】According to the twelve-year-old boy in the interview, what is the reason for the mother wanting her boy to take part in the basketball camp?
A.
His mother is a basketball fan, too.
B.
His mother knows that he is crazy about basketball.
C.
His mother thinks that this can help him grow taller.
D.
His mother expects him to be an excellent basketball player in the future.
查看完整题目与答案
【单选题】下面有关凸轮的论述不正确的是( )。
A.
对于从动件为尖顶式的凸轮，其理论轮廓曲线与实际轮廓曲线重合
B.
对于从动件为滚子式的凸轮，其理论轮廓曲线与实际轮廓曲线为法向等距且相距为滚子半径的曲线
C.
对于从动件为平底式的凸轮，其理论轮廓曲线与实际轮廓曲线很接近
D.
以上说法都不正确
查看完整题目与答案
【单选题】The boy wanting to be independent , _____his father’s offer of help .
A.
turned away
B.
turned from
C.
turned down
D.
turned against
查看完整题目与答案
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