灌浆顺序一般为()。
A.同时灌
B.先灌边孔、后灌中孔
C.齐头并进
D.先中后边
参考答案:B
钢筋混凝土桥
---Jim is coming by _______ plane tomorrow.
---Let’s go to ________ airport to meet her.
A.a ; a
B./ ; a
C.the ; the
D./ ;the