【简答题】已知,AC⊥AB,EF⊥BC,AD⊥BC,∠1=∠2,请问AC⊥DG吗?请写出推理过程。
【单选题】It is obvious that John is unhappy. _________, it comes as no surprise that she has decided to change her job.
【判断题】硅酸盐水泥的强度等级是根据水泥胶砂强度试验测得的3天和28天强度确定的。()
【单选题】John Keats was a poet of ______.
【多选题】硅酸盐水泥的强度等级是根据水泥胶砂强度试验的( )强度确定的。
【简答题】甲是乙的儿子,但乙不是甲的父亲,为什么?请写出推理过程,并指出运用什么推理的什么式?
【单选题】In the late 17th century, the most famous writers were ______.
A.
John Bunyan and John Milton
B.
John Bunyan and John Donne
C.
John Donne and John Milton
D.
John Donne and Francis Bacon
【简答题】已知,AC⊥AB,EF⊥BC,AD⊥BC,∠1=∠2,请问AC⊥DG吗?请写出推理过程.