炸药的化学变化过程,按照反应的速度及传播性质,基本上可以分为()种形式。
A、2
B、3
C、4
D、5
参考答案:B
Julie was good at German, French and Russian, all of ________ she spoke fluently.
A.who
B.whom
C.which
D.that
细菌性痢疾的主要临床表现为()
A.高热
B.黏液脓血便
C.腹痛,左下腹为重
D.腹泻
E.里急后重