装运易燃易爆化学危险品,严禁与其他货物(),要(),搬运场地不准()。
参考答案:混装;轻拿轻放;吸烟
Part 3
Questions 19-25
The Haunted America
America used to be thought of as ______.
A.a paradise and a final destination point
B.a land of freedoms and liberties
C.a land of golden opportunities
D.all of the above
可吸入性纤维粉尘是指()
A.直径>31μm,长度<5μm
B.直径>3μm,长度≥5μm
C.直径<3μm,长度<5μm
D.直径<3μm,长度≥5μm
E.直径<3μm,长度≥91μm