高压辅汽母管压力正常应为多少?
参考答案:
1.5Mpa.
Look! He's catching Tom of Class Two. [ ]
A. up with
B. with up
C. up to
D. with
在木窗扇的制作中,窗心用料的厚度为()。
A.比边框厚;
B.比边框薄;
C.与边框相同;
D.随意。