【单选题】Floods can cause traffic ______.
【单选题】The floods which are given most publicity______.
C.
cause less agricultural damage than the many smaller, more frequent floods
D.
far exceed the smaller, more frequent floods in agricultural loss
【判断题】对于易于自燃的货物,在完货后,应注意平舱。
【单选题】从肝细胞或胆管上皮细胞发生的恶性肿瘤称为( )
【判断题】由肝细胞和肝内胆管上皮细胞发生的恶性肿瘤均称为原发性肝癌。
【判断题】由肝细胞和肝内胆管上皮细胞发生的恶性肿瘤均称为原发性肝癌。
【单选题】如图所示,电压的瞬时表达式为
D.
u=10sin(100πt +3 π/4)V
【判断题】砌体水平灰缝砂浆的饱满度是用百格网来检验的。( )