a pencil with a replaceable and mechanically extendable solid pigment core called a “lead” A:

Registration is ______ in the election in order to ensure the validity of the votes. A: irresistible B: replaceable C: compulsory D: accessible

The price of the catalogue is _____ against your first order. A: removable B: replaceable C: rechargeable D: refundable

All the countries and regions with developed market economy have mature chambers of commerce and industry, and these organizations are playing ____roles in the market economy system. A) replaceable B) irreplaceable C) substitutable D) changeable

Lubricating oil systems are fitted with a wide variety of strainers some of which can be cleaned in site while others have replaceable cartridgesThe bold and italic word “which” means （）. A: lubricating oil B: lubricating oil systems C: strainers D: cartridge

transfer transportation transition transmission transport transmit replace substitute shift recover replaceable function association link connection stagnant slack artificial automatic automatically show up show around show off show out He accused the government of ______ supervision of nuclear technology.