砂浆抗压强度试验是检验砂浆的实际强度，确定砂浆是否达到设计要求的标号。( )
参考答案：对
The peace talk between the two sides ______, as neither wanted to give in.
A．broke out
B．broke up
C．broke down
D．broke away
用于盛装危险货物的木桶，一般规定容积不得超过____，净重不得超过50kg。
A.40L
B.50L
C.60L
