以下关于散剂特点的叙述，错误的是
A. 易吸湿变质的药物不宜制成散剂
B. 对疮面有一定的机械性保护作用
C. 比表面较大、奏效较快
D. 刺激性强的药物不宜制成散剂
E. 含挥发性成分较多的处方宜制成散剂
in a turbocharger, inlet air velocity is increased in the _______________.
A. inlet nozzle ring
B. stationary diffuser passages
C. compressor outlet volute
D. rotating impeller vanes
如果预报没有云，并且简语“CAVOK”不合适，就应使用简语()。
A. SKC
B. NSC
C. NSW
When a diesel engine is operate at partial load, as compared to full load ,a decrease will
A. air quantity aspirated
B. fuel injection pressure
C. combustion pressure on the power stroke
D. compression on the compression stroke
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