异种珠光体钢焊接时,预热温度应()
A.按合金含量较低的母材需要选取
B.按合金含量较高的母材需要选取
C.低于合金含量较低的一侧母材需要的选取
参考答案:B
—Since you like the fur coat so much, why not buy it?
—Well, I can’t afford_____ coat.
A.that expensive a
B.that an expensive
C.so expensive
D.such expensive
咽壁的特点是无明显的黏膜下组织,纤维层与黏膜紧密附着。