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【单选题】
模板、支架和拱架的拆除，做法错误的是（ ）。A.
非承重侧模板混凝土强度能保证其表面及棱角不致因拆模而受损坏时方可拆除，一般混凝土抗压强度达到2．5MPa时方可拆除侧模板
B.
当构件跨度不大于4m时，在混凝土强度符合设计强度标准值的50%的要求后，方可拆除
C.
当构件跨度大于4m时，在混凝土强度符合设计强度标准值的75%的要求后，方可拆除
D.
跨径小于20m的小拱桥，上建筑全部完成后卸架
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举一反三
【单选题】The commercial is an ________ medium for advertising.
A.
earnest
B.
eradicative
C.
effective
D.
educative
【单选题】Jackie has an idea for the commercial. What is it?
A.
Nick sits on a park bench and a young kid approaches him.
B.
Nick plays in a soccer match and a large crowd cheers for him.
C.
Nick sits on a bench at the soccer field and puts on his shoes.
【单选题】The commercial is an ________ medium for advertising. ( )
A.
earnest
B.
educative
C.
eradicative
D.
effective
【简答题】Listen to the commercial once again and complete the chart about the old process of starting Internet business. The following is an example of good notes. It keeps the essential information and presen...
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