什么是泵吸入口气液比？

—What's your brother like?

—_____.[ ]

A. He likes playing basketball

B. He likes all of us

C. He's short but fat

D. He's very well, thank you

脱硫配方设计要求包括哪些内容？

一般来说采用电刷镀比其他修复方法合算。

某工程基础砖砌体，宜选用下面何种砂浆？（）

A.水泥混合砂浆

B.石灰粘王砂浆

C.石灰砂浆

D.水泥砂浆

客货分线的客运线路未被平衡欠超高困难情况下不应大于（）。

A、30mm

B、40mm

C、50mm

D、80mm