保温砌块最小外壁厚和肋厚不宜大于30mm。
参考答案:错
Mrs. White managed to settle the quarrel between Lei and Rain without hurting the feelings of______. [ ]
A. either
B. none
C. neither
D. all
防治水基本原则:预测预报、有疑必探、先探后掘、()。
A、先治后采
B、边治边采
C、先采后治
D、以上都不正确