皮皮学，免费搜题
登录
搜题
【单选题】
机械循环系统的循环水泵一般设在锅炉入口前的回水干管上,该处水温最低,可避免水泵出现( )现象。A.
膨胀
B.
气塞
C.
气蚀
D.
压缩
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The work seemed easy at first but it ____ to be quite difficult.
A.
broke out
B.
turned out
C.
worked out
D.
set out
【单选题】The work seemed easy at first but it ____ to be quite difficult.
A.
Broken out
B.
Turned out
C.
Worked out
D.
Set out
【简答题】When did the British take over the continent of Australia and declare it “terra Nullius”?A. Early 15th century B. Late 18th centuryC. 17th century C. 16th century
【单选题】餐厅服务员进行中餐零点摆台时,正确的做法是( )
A.
、铺台布时正面向下
B.
、摆放骨碟时店徽正对客人
C.
、骨碟正前方摆放白酒杯
D.
、骨碟右侧 1 厘米处摆放筷子
【单选题】When did the British take over the continent of Australia and declare it “terra Nullius”?
A.
Early 15th century
B.
Late 18th century
C.
16th century
D.
17th century
相关题目：