Rivetsareusuallymadeof（）.
A. wrought-iron
B. aluminum
C. high-tensilesteel
D. mildsteel
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Startingmotors，generators，andothersparkproducingdevicesshouldbemountedashighabovethebilgesaspossibleto（）.
A. keepthemdrywhenthebilgesarefullofwater
B. keepthemcoolwhenthevesselisunderway
C. makethemmoreaccessibleforrepairs
D. preventaccidentalignitionofanygasolinevaporsthatmayhaveaccumulatedinthebilges
以下药物组中，不可以放于同一药斗的是（）
A. 山药片与天花粉片
B. 苍术与白术
C. 牡丹皮与赤芍
D. 生甘草与炙甘草
TheCertificateofInspectionofadamagedtankbargehasexpired.Whatcertificateauthorizesthebargetomovetoarepairfacilityforrepairandinspection?（）
ApplicationforInspection
B. ChangeofEmployment
C. PermittoProceed
D. TemporaryCertificateofInspection
薄荷在煎服是应（）
A. 先煎
B. 后下
C. 包煎
D. 烊化
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