Which of the following answer is NOT appropriate?A: Would you care to join us for dinner tonight?B: _____
A. Yes, I would.
B. Thank you. I'd love to.
C. I'm sorry but I already have plans tonight.
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Which of the following answer is NOT appropriate?A: Tonight is no good. Can I take a raincheck?B: _____
A. ONo problem.
B. Sure. Let's do it some other time.
C. No, you can't.
Which of the following answer is NOT appropriate?A: Do you want me to bring something?B: _____
A. No, just bring yourself.
B. Why? You don't like my cooking?
C. OK, bring some dessert if you want.
粗集料应使用质地坚硬、耐久、洁净的( )
A. 碎石
B. 软石
C. 碎卵石
D. 卵石
初步配合比设计的( )三个参数,然后用体积法或质量法即可求出配制水泥混凝土所需的各材料质量。
A. 水灰比
B. 砂率
C. 单位用水量
D. 含泥量
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