在遮蔽板和试件之间的边界区域中热流不是()的。
A、反复
B、循环
C、单向
D、双向
参考答案:C
“We weren’t sure which way to go. In the end, we turned right.”
“You _______ the wrong way. You _________ left.”
A.had gone; must have turned
B.went; must turn
C.have gone; would have turned
D.went; should have turned
闰绍细胞释放抑制性递质可使α运动神经元的胞体产生
A.EPSP B.IPSP C.终板电位 D.发生器电位 E.锋电位