高空作业要使用专门的用具传递工具、材料和零部件等,不得(),高空作业人员要()。()
A.抛掷传递、系好安全带
B.抛掷传递、系好安全绳
参考答案:A
Though__ __ came that he was completely defeated, he didn't lose ______.
A.the word; his heart
B.the word; heart
C.word; his heart
D.word; heart
位于延髓内的核团是()
A.三叉神经运动核
B.展神经核
C.薄束核
D.上泌涎核
E.面神经核