按传热方式或热传递原理进行分类,换热设备有哪几种主要形式,各有什么特点?
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观测场场地应平整,保持有均匀草层,草高不能超过30cm。场内不能种植作物。()
A. 正确
B. 错误
在左前斜位片上心脏后下缘明显凸出,提示()在右前斜位片上食管压迹加深,提示()
A. 左心室增大
B. 右心室增大
C. 左心房增大
D. 右心室增大
E. 以上都不是
商业银行在会计报表附注中披露的重大关联方交易情况是指交易金额在()万元以上或占商业银行净资产总额1%以上的关联方交易。
A. 3000
B. 1000
C. 5000
D. 2000
Which general statement concerning radar is FALSE?().
A. Raising the antenna height increases the radar range
B. The ability of radar to detect objects is unaffected by weather conditions
C. Radar bearings are less accurate than radar ranges
D. Radar should be checked regularly during clear weather to ensure that it is operating properly