铝锭铸造机组是由()、()、()和()四部分组成的
参考答案:铸造机;冷运机;堆垛机;成品运输机
把酒精擦在手背上,手背感觉比较凉快,这是因为酒精________(选填“汽化”或“液化”)吸热的缘故。
Business people abroad who want to make connections with Chinese companies can take the first step using a new Internet site our firm established recently.
A.contacts
B.joints
C.acquaintance
D.linking