根据《劳动防护用品配备标准(试行)》,电工配备的劳防手套应具有的性能是()。
A.防砸
B.绝缘
C.阻燃耐高温
D.胶面防砸
参考答案:B
In those days, books _____ one at a time by hand. [ ]
A. should be produced
B. should be produce
C. could be produced
D. could produce
柴油以()表示低温性能,它是保证柴油输送和过滤性的指标。
A、凝点
B、粘度
C、馏分组成
D、十六烷值