Inarefrigerationsystem,ifthecoolingwatertothecondenserfails,the（）.
A. boxtemperaturesolenoidvalvewillclose
B. expansionvalvewillclose
C. compressorwillshutdown
D. kingvalvewillopen
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Foroperationsinpackice，avesselshould（）.
A. beonanevenkeel
B. betrimmedslightlybythehead
C. haveadragofnotmorethan60-90centimeters
D. beballastedsotheforefootisnearthesurface
“6858农信银历史数据查询”交易，可以查询到的业务类型为（）。
A. 查询查复
B. 通存通兑
C. 电子汇兑
D. 银行汇票
在调试发射机和雷达时，首先要清除天线附近（）。调试时要严防微波辐射和高压电伤人。确认（）可靠方可进行调试。
A. 物件；接地
B. 电线；接地
C. 物件；安全
D. 电线；安全
Whenarefrigerationcompressorisinthe‘off’cycle,thethermalexpansionvalvewill（）.
A. alwaysbewideopenwhenthecompressorrestarts
B. continuetooperateasifthesystemwereinoperation
C. remainopenuntilevaporatorpressureequalizes,thencloseuntilthecompressorrestarts
D. alwaysbecompletelycloseduntilthecompressorrestarts
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