依据《燃煤二氧化硫排放污染防治技术政策》，在热网区外和未进行集中供热的城市地S，不应

When the adjacency list method is used to store a graph, which of the statements is (are) true ( )
A) None B) Ⅰ only C) Ⅱ only D) Ⅰ and Ⅱ

男性，40岁。反复饥饿时中上腹部隐痛10年，伴反酸、嗳气，进食和服制酸剂可缓解，今晨中上腹剧痛后全腹疼痛持续存在。

为确诊疾病应选择下列哪一种检查手段（）。

A.血清淀粉酶测定

B.癌胚抗原测定

C.胃镜检查

D.X线腹部平片

E.腹部B超检查

Man: By the way, Jane, did you talk to the consultant about our health program Woman: I contacted his office, but his secretary said he would be out for lunch until two. Question: What does the woman mean

A．She talked with the consultant about the new program until two.

B．She couldn't talk to the consultant before two.

C．She would talk to the consultant during lunch.

D．She couldn't contact the consultant's secretary.

农林特产税的计税依据是农林特产品的（）

A.实际收入

B.总产值

C.净收入

D.利润

地球上谷物生产最多的是（）。

A.欧洲

B.北美洲

C.亚洲

D.大洋洲