测长时应观察试件的膨胀、变形、筒辟、特别要注意有无胶体物质出现,并作详细记录。
参考答案:错
解析:测长主要是观察其外形的变形,有无裂缝,或渗出物的表现。
.He voiced a doubt at the company meeting ______works hard can be______they want to be.
A.that whoever, what
B.whether whoever, whatever
C.which who, whatever
D.if who, whatever
收获期农作物保险