每块预制块件的混凝土必须一次灌完，不得中断。 ( )
参考答案：对
Had he not been so busy taking the diamonds, he _________ the blow. [ ]
A. had been feeling
B. would feel
C. would have felt
D. had felt
在珠光体转变中，碳的析出和铁的晶体点阵的改组是依靠切变方式进行的。（）
