The steady current circling the globe at about 60°S is the（）. ["Prevailing Westerly","Sub-Polar Flow","West Wind Drift","Humboldt Current"]
在使用Word 2000编辑文档时，下列叙述中不正确的是（）。 ["A.同一个Word文档的多个页面可以设置为不同的纸张类型","B.通过“格式”菜单中的“项目符号和编号”设置段落“编号”时，可使用数字编号①、②…","C.在文档中插入页码时，文档第一页的页码可以不为1","D.奇数页和偶数页的页眉和页脚可以设置不同的内容"]
煤在常压下，以（）作为气化剂经气化后所得的煤气称为发生炉煤气。 ["甲烷","空气、水蒸气","二氧化碳","氮气"]
输灰皮带要做哪些检查？
The speed of an ocean current is dependent on（）. ["the density of the water","the air temperature","the presence of a high pressure area near it","underwater soil conditio"]
发现鼓风机异常应做哪些检查？
